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Inclusion of NieR:Automata novellas, missing additional information from NieR Reincarnation.
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The NieR series, much like it's predecessor, Drakengard, has a branching timeline. Aside from the games, much of the in-universe lore and events are expanded on in various supplemental media, such as novellas, orchestral concerts, and drama CDs.

Other comprehensive looks at the NieR timeline can be seen here (Dragonsphere Wiki) and here (Fire Sanctuary).

Setting[]

In Grimoire NieR, it is theorized that the world of Drakengard exists in a parallel universe to the world featured in NieR, which is ostensibly Earth. Information presented in Drakengard 3 reinforces this theory and indicates that events near the Iberian Peninsula in 856 resulted in the initial point of divergence.

The world of NieR resembles our own (real-life) world up until the events that occurred in 2003 Tokyo, as featured in Drakengard's Ending E.

Overview[]

Timeline[]

Note: Events that occur in parallel timelines will be marked with [brackets].

856 AD[]

"The Cataclysm" occurs. A city appears on the Iberian Peninsula.
  • Among the chaos of The Cataclysm, pillagers run rampant and the refugee population increases.
  • Sightings of strange beings are reported, as are attacks on people.

858 AD[]

The Eastern Roman Empire falls.
  • Tales of a great Dragon suddenly appearing and razing the capitol spread.

862 AD[]

The Western, Central, and Eastern Frank kingdoms fall.
  • In the Central Frank kingdom, the assassination of Rod Vico II causes chaos that spreads to the neighboring kingdoms.

865 AD[]

"Midgard" emerges. Rumors of the "Cathedral City" spread.
  • Following The Cataclysm and the loss of defined nations, Europe begins to be called "Midgard" in this era.
  • The city that appeared during The Great Disaster is named the "Cathedral City."
  • People begin to inhabit the city and govern themselves.

997 AD[]

Zero gains the Flower parasite.
  • Zero gains the Flower parasite and the power of song.

998 AD[]

Zero's sisters are born. Zero meets Michael and Accord.
  • Zero's sisters (One, Two, Three, Four, and Five) are born.
  • Zero meets the Dragon Michael.
  • Zero meets Accord, who tells her that she is a "singularity."

1000 AD[]

The events of Drakengard 3 take place.

[1020 AD][]

[In a parallel world, slaver raids occur in a kingdom of sand and sea.]
  • [A small town near a kingdom of sand and sea is raided by slavers.]
    • [Those who resist are murdered, and the rest are sold into slavery.]
  • [A noble family is confirmed to have been visiting the town at that time.]

[1022 AD][]

[A wealthy merchant is murdered by their slave.]
  • [On a stormy night, on a ship headed for the kingdom, a slave boy kills his owner.]
  • [Most of the escaped slaves are eventually returned to slavery and disciplined as traitors.]

[1028 AD][]

[The Princess's smile plan begins.]
  • [The Queen of the kingdom declares that anyone who is able to make her daughter smile will receive her as a prize.]
    • [Many men try...]
      • [...none succeed.]

[1031 AD][]

[The Princess and a suitor commit suicide.]
  • [The Princess and a boy who tried to win her smile escape the kingdom, go out by boat into the sea, and fall into the sea, committing double-suicide.]
  • [The news of the happening is reported by the Princess's handmaiden, which soon spreads throughout the kingdom.]

[1032 AD][]

[The Princess returns from the dead.]
  • [The Princess, who was reported dead, returns.]
  • [The next year, she marries a prince from a neighboring country.]
  • [From freeing slaves to fighting poverty, the new Queen shines like the sun on the shadows of her country, and is remembered throughout history as the greatest and wisest ruler of her land.]

[1335 AD][]

[A woman's body is found near the Flowering Rose Castle.]
  • [In a town east of the Flowering Rose Castle, the corpse of a woman who had just given birth is found.]
    • [The baby, however, is missing. It is rumored the dead woman greatly resembled the queen.]

[1342 AD][]

[The "Goat People" caste is introduced.]
  • [In order to placate the commoner class, an even lower class, the "Goat People," is created.]
    • [Members for the new lowest class are chosen at random, but certain powerful nobles and competitive merchants are chosen purposefully.]

[1346 AD][]

[The Goat People revolt.]
  • [20 odd members of the Goat People class revolt to protest the death of a young girl.]
  • [The revolt is put down quickly and the members are executed.]
  • [News of a black monster appearing at the site of the revolt spread.]

[1477 AD][]

[In the far east, a warrior dies twice.]
  • [On an island nation in the far east, during a battle, a warrior rises from a mountain of corpses.]
  • [The warrior protects their shogun until they fall again. Afterwards, the shogun raises that warriors' house to a high status.]

[1513 AD][]

[A legendary Adventurer is birthed.]
  • [A future "legendary adventurer" is born in a mountain hut.]
    • [This adventurer would find hidden islands, blaze new mountain paths, and discover plants and herbs of great medicinal properties. He would be credited with many advancements for humankind.]

[1517 AD][]

[The helivelite mineral is discovered.]
  • [The helivelite mineral is discovered by the adventurer.]
    • [It is initially valued like gold, but when discovered more broadly, it loses its value.]
  • [For this discovery the adventurer gains great wealth, but ignores it in lieu of continuing to adventure. These facts are made clear in the diaries of the Adventurer discovered at a later date.]

[1520 AD][]

[A Daimyo lord gains control of the nation.]
  • [Back in the far east kingdom, a daimyo lord gains control of the nation.]
  • [An intruder infiltrates the daimyo's castle.]
  • [The heir goes missing, but is not confirmed dead, and so is assumed kidnapped.]

[1526 AD][]

[In the far east, a criminal injures many.]
  • [In a downtown of a far east city, a criminal raises a commotion, injuring multiple people.]
  • [Many of the injured were carrying weapons, and a plot is suspected.]
  • [Among the injured is a young girl.]

[1536 AD][]

["The Mountain Of Death" is conquered.]
  • [Many climbers and adventurers attempted to scale "The Mountain Of Death," but none succeeded until a 23-year-old achieved it.]
    • [She discovered an ancient temple at the summit, but it is unknown who created the temple.]

[1776 AD][]

[A "New Empire" is declared in the west.]
  • [A "New Empire" is declared on a western continent. It rose on the back of scientific prowess.]
  • ["The Declaration of Independence" is ratified in a continental vote two days later.]

[1784 AD][]

[A school for magic is established.]
  • [A school for the magically gifted is established, presumably on a different continent.]
  • [In addition to teaching magic, the school encourages a "Rite Of Bond" that strengthens the passing-on of magic.]

[1840 AD][]

[The corpse of a student is discovered at the school Of magic.]
  • [The corpse of a boy is discovered on the day of the Rite Of Bond.]
    • [Traces of black magic are discovered at the murder site.]
[A rash of magic-user murders occurs.]
  • [The bodies of 99 murder victims are discovered in a forest near the magic academy.]
    • [Again, traces of black magic are found.]
    • [Connections to the boy murdered on the day of the Rite Of Bond are proposed.]

[1865 AD][]

[The magic school burns down during wartime.]
  • [The long-standing school Of magic burns down in a fire caused by war.]
  • [A great number of students stay on the campus to protect the books in the library.]
  • [All students survive.]
  • [Some students claim they heard a voice in the library.]

[1899 AD][]

[The nation on the western continent begins the "Infant Abduction Strategy".]
  • [On the western continent, a plan called the "Infant Abduction Strategy," with the goal of kidnaping children of good genes from the neighboring country to raise and train them as soldiers, is started.]
  • [The strategy was kept top secret, even within the army.]

[1915 AD][]

[The 25th Regiment 6th Company successfully executes its "Zero Deaths" strategy.]

[1918 AD][]

[In the Capital, the "Sunflower Uprising" occurs.]
  • [An uprising occurs within the army, consisting of Infant Abduction Strategy survivors.]
  • [In later years, it is revealed that the survivors wished to "face their fate like sunflowers facing the sun," thus leading to the name.]
[The Infant Abduction Strategy is made public.]
  • [The Commanding Officer of the 25th Regiment 6th Company gives his name to a journalist, revealing the Infant Abduction Strategy.]
  • [After this revelation, negative public outcry leads to the end of the war.]

2003 AD[]

June[]

The 6/12 Incident occurs, a mysterious giant and red dragon appear in Shinjuku, Tokyo.
  • In June, a mysterious giant and red dragon suddenly appear in Shinjuku, attacking each other.
  • The source and nature of the attacks is unknown, but the Japanese Self-Defense Force immediately begins study and research.
  • The Japanese government forms a special council to address the incident.
  • The dragon kills the giant, but when the giant hits the ground, the impact is lighter than expected.
  • After the destruction of the giant, an aircraft, nicknamed "Scarface of the Airforce's 6th Fleet 303rd Unit," attacks and eliminates the dragon.
  • The remains of the dragon are taken to a secret research facility.
  • The incident is referred to as "The 6/12 Incident."
    • 56 were killed, 320 suffered injuries, and over ¥60,000,000,000 in damages occurred.
    • The inexplicable images of the event made there way to the internet.
    • Confusion spread as rumors started of the incident being linked to terrorism or attacks from neighboring countries.

September[]

World leaders meet to discuss 6/12.
  • In September, world leaders convene three months after the 6/12 Incident. Leaders from Japan, China, the United States, and Russia meet.
  • The US recognizes it as a "terrorist attack" and vows to stand up to potential enemies, and the Japanese government offers funding.

December[]

The first case of a new disease is reported.
  • In December, in Shinjuku, Japan, a novel pathogen emerges.
  • It turns the affected into white mineral with a 100% fatality rate.
  • Study begins on the disease, but not seriously.

2004 AD[]

February[]

Deaths from the new disease increase sharply.
  • By February, the number of infected increase dramatically, mostly centered around Shinjuku.

April[]

Some infected experience change in behavior to savage and ferocious.
  • In April, among the infected, some turn wild and violent.
  • Shinjuku becomes an area empty of all but the dead and the savage.
  • Japan and other nations of the world redouble their research efforts.

May[]

The savage infected spread.
  • By May, according to research, it is discovered the infected become either the dead or the savage.

June[]

The disease is named the "White Chlorination Syndrome," abbreviated as WCS.
  • In June, a research group formed in December of 2003 announces their findings.
  • The cause for the white mineral deaths and savage infected forms are not known, but they originate from the same disease.
  • The Japanese government headquarters and imperial family are proposed to move locations, but are vetoed by the Imperial Household Agency.
  • The proposed moves cannot gain enough votes, and they remain.

July[]

Shinjuku enters the highest state of emergency.
  • In July, Shinjuku enters emergency level 4.
  • All access to Shinjuku is stopped, and destruction of roads and rails begins.

September[]

The "Shinjuku Blockade Plan" is proposed.
  • In September, a plan is proposed to cut off Shinjuku completely.
  • Public demonstrations reject this proposal, but online sentiment is more favorable.
  • When an important public figure is killed in Shinjuku by a savage infected, and the killing makes national news, public opinion turns to the blockade.

October[]

  • The Shinjuku Blockade Plan is implemented. An immense wall, later dubbed the Wall of Jericho, is erected to physically seal Shinjuku from the outside world.
  • It is announced that operations to suppress berserking individuals infected with WCS will continue within the walls.
  • The international community widely criticizes the Japanese government's decision. Demonstrations and protests occur in several countries across the globe.
  • Research continues on cure and treatment of WCS.

December[]

  • Transmissions sent by members of the media who voluntarily remained behind the wall in Shinjuku are abruptly cut off. The final film relayed is ends with a scream as a giant white being appearing.
  • The image is not publicly released, but is soon leaked on the internet.

2005[]

December[]

  • The JSDF and organized vigilante groups continue to rout berserkers from WCS within the Wall of Jericho.
  • The Japanese government announces that transmission of WCS infection has steadily decreased and quieted for the time being.
  • Research continues on causes and possible vaccination against the disease.

2006[]

May[]

  • Research results on WCS are presented to the government. It is reported that the mutation that occurs leading to fatality or complete psychotic breakdown is determined on the genetic level. It is theorized that people with slight irregularities in some chromosomes have a high probability of going berserk.
  • Results of the research are not publicly announced and further research continues in secret.
  • It is later revealed that this theory is incorrect as the interpretation was a result of falsified test data.

Unknown Month[]

  • An attack by an unknown faction occurs on the research facility holding the remains of the dragon. On-site security, local police, and the JSDF manage to repel the attack.
  • Rumors and conspiracies swirl regarding the identity of those responsible for the incident, with claims of everything between religious cults and the United States being the responsible party.
  • The JSDF's country wide security measures increase dramatically.

2007[]

October[]

  • An irregularity appears in an aerial satellite photograph of Shinjuku. A strange black "dot" appears in photographs over the area.
  • Observations of the "dot" are observed and reported. However, further investigation is deemed unnecessary.

2008[]

February[]

  • The Wall of Jericho around Shinjuku is destroyed from within. At the time of the barrier's destruction, sounds similar to the ones heard during the 6/12 Incident are also heard.
  • A massive number of berserking white creatures, later dubbed "The Legion," pour out from behind the wall. They begin slaughtering all humans they come into contact with.
  • A creature with crimson eyes, later designated as a "Red Eye", is observed leading the Legion's movements.
  • The JSDF immediately begins an operation to repel the Legion's assault.
  • The operation encounters difficulties and amasses many casualties due to the Red Eye's organization of the Legion's attack.

May[]

  • White Chlorination Syndrome re-emerges and rapidly spreads.
  • First cases of WCS outside of Tokyo are reported.
  • WCS spreads to the rest of the Kantō region by the end of the month.

August[]

  • The research facility studying the dragon is secretly re-located outside of Japan. The new location is classified, but a popular theory stated its new location was in the United States.

September[]

  • With the mounting danger in Tokyo due to the Legion, a decision is made to relocate the Japanese government and imperial residence to the relatively unscathed Kyushu region.

October[]

  • Cases of WCS rise dramatically across region, as do those transforming into Legion.
  • Battles between the JSDF and The Legion erupt all across Honshu. The JSDF suffers heavy casualties due to the Legion's resistance to available weaponry.
  • A mass exodus by civilians from Honshu into Kyushu and Hokkaido occurs. Many more try to flee Japan entirely.
  • Several countries across the globe enact policies barring Japanese refugees due to fear of WCS spreading outside Japan.
  • Crime skyrockets amidst the chaos. The Japanese government is hampered by increasing interference from overseas.
  • A military alliance with the United States is suggested, but its terms are unfavorable to Japan. Other allies of the nation advise against the proposal.

2009[]

January[]

  • Feeling vulnerable from a militarily defense standpoint, the Japanese government agrees to a joint combat operation with the United States. The US-Japan Joint Operation Accord soon begins.
  • The United States transports Legion corpses and captives back to America for study in military research.
  • The US Army arrives in Japan by the end of the month, and joins forces with the JSDF in efforts to repel the Legion attack.
  • The battle between the Legion and humanity escalates. The Legion are slowly pushed back.

March[]

  • Seemingly limitless Legion continues to pour out of Shinjuku, despite heavy losses on their side in the past few months.
  • Shinjuku is carpet-bombed in several military operations. Only a slight reduction in the number of Legion present in the city is observed following the bombing runs.
  • Research on counter-measures against the Legion continues, but makes little headway.

April[]

  • The US and Japanese governments consider the nuclear option on Shinjuku in an effort to rout the growing Legion at the source.
  • Plans to utilize nuclear weaponry on the city are publicly announced. While Japanese opinion on dropping the nuke is mixed, the decision is greatly supported by the international community.

August[]

  • On August 6th, an atomic bomb is dropped on Shinjuku. The date is coincidental, but links to the Hiroshima tragedy are almost immediately brought up by the media.
  • Later that month, several other key areas of dense Legion activity are also attacked with nuclear weapons. The majority of Japan is ultimately affected by the bombing campaign.
  • Shinjuku is decimated in the nuclear fires. It becomes referred to as "Ground Zero."

November[]

  • Survey reports the nuclear campaign in Japan a success. All traces of Legion activity in the country have been eradicated.

2010[]

February[]

  • The first recorded case of White Chlorination Syndrome outside of Japan is reported in China
  • Legion appearance in other areas of Asia are confirmed soon after.

March[]

  • Outbreaks of WCS are confirmed in several countries across the planet.
  • Research on the disease is intensified internationally.

April[]

  • WCS and Legion appear worldwide, rioting and civil unrest accelerates on a global scale as the infection spreads.
  • The survival of the Legion commander "Red Eye" is confirmed.

June[]

  • Research on the corpse of the dead dragon proves the "Multiple-Origin Theory," which states that another world exists in a parallel universe from Earth. The dragon and the giant of the 6/12 Incident are determined to have intruded from this parallel world.
  • Research on the intrusion from the other world reveals the presence of particles which should not exist. These particles are found to be remnants of the giant of the 6/12 Incident. The otherworldly element is labeled "maso."
  • The origin of WCS is announced to be caused by maso. Transmission of the infection is shown to be through bodily fluids and waste. Coughing and saliva can also transmit maso particles through the air. No physical means, such as heat from explosives or nuclear weapons, can destroy maso generated WCS. Ironically, the nuclear attacks on Japan only served to spread the WCS inducing element on a global scale.
  • Breakthroughs in various technological fields come about with the discovery and study of maso.
  • Research on the "Multiple-Origin Theory" continues and reveals that energy is stored equally through the multiple worlds.

2011[]

October[]

  • The classified facility conducting research on the dragon's corpse is attacked and destroyed by an unknown armed party.
  • The body of the dragon vanishes. Rumors circulate regarding religious cults and rival governments being the perpetrators, but no organization steps forward to claim responsibility.
  • Investigation into the attack is quickly suppressed. No further information is revealed.

2014[]

March[]

  • Project Gestalt begins in an effort to contain the spread of WCS. Research is conducted into "Gestaltisierung," the process in which souls are removed from the human body utilizing maso reactions.
  • The first Gestalt experimentation on a human succeeds. The test subject's soul is removed from its body and later re-united with no ill-consequences.

May[]

  • Using maso to absorb energy from other worlds, experiments succeed in breaking the law of conservation of mass by "creating something from nothing." The process is later called "magic."

2015[]

Unknown Month[]

  • The Gestaltisierung process is revealed to the public and is wildly rejected by the populace.
  • Despite the lack of popularity of Project Gestalt, research continues in finding a solution for the potential problem of a Gestaltized soul which has lost its body.

2016[]

February[]

  • "Luciferase," a medical compound which can greatly slow the onset of White Chlorination Syndrome, is developed.

May[]

  • Luciferase is administered to select individuals who soon form an elite military squad with hopes of directly combating the growing Legion.
  • This organization succeeds in several battles against the Legion forces. Several similar movements utilizing Luciferase vaccinated squads crop up worldwide.
  • Several of these units band together to form the "1st Crusade" squadron.
  • The 1st Crusade Squad battles the Legion, but are ultimately defeated and the entire unit is wiped out.

December[]

  • Research discovers Luciferase to be more effective in younger patients. Children with exemplary physical ability are given preference for Luciferase treatment and urged into Legion combating squads.
  • The "Hamelin Organization" is formed. It is an internationally funded group committed to train soldiers, mostly teenagers due to the Luciferase compatibility, to fight the Legion.

2018[]

  • Officials within the Japanese government call for a stronger standing defense force in opposition to growing concerns over the military reach of the Hamelin Organization.
  • The "National Weapons Research Laboratory" is founded with the purpose of studying the weaponization of maso particles. Their primary objective is to enhance human beings with maso's energy potential.

2019[]

  • The Legion and the Hamelin Organization Crusaders continue to engage in battle across the globe and fight to a near stalemate. Casualties are massive on both sides of the conflict.
  • The Hamelin Organization's influence grows in countries with great numbers of young potential recruits to the crusaders.
  • The already struggling Japanese economy is further strained as most remaining survivors gather in Kyushu.

2023[]

  • Heavy battles between the Legion destabilizes world economies and creates a massive gap in wealth between the rich and poor.
  • Massive slums and shanty-towns expand all over the world. Civil unrested escalates.

2025[]

January[]

  • The first "Replicants" are created, vessels based on genetic information of a person undergoing Gestalt conversion. These shells provide the solution to the dilemma of a Gestaltized soul losing its physical body.
  • The first Replicant experiment in which a Gestalt is removed from its original body and then integrated with its corresponding Replicant vessel succeeds.
  • The techniques of "Replicantization" is integrated into a newly expanded Project Gestalt.

2026[]

Unknown Month[]

June[]

  • A catastrophic accident occurs at the National Weapons Research Laboratory in which control of Experiment "Number 6" is lost.
  • An emergency plan to seal away "Number 6" utilizing experiment "Number 7" is put into action soon thereafter.
  • Project oversight deems experimentation with maso on humans' dangers out weight the benefits, and the scope of the research is scaled back dramatically.

2030[]

  • Red Eye, the leader of the Legion, is slain in Jerusalem by the leader of the Hamelin Organization's 13th Crusade unit. The commanding officer dealing the killing blow in the battle is mortally wounded during the conflict, and seemingly succumbs to injuries soon afterwards.
    • In reality, both the Red Eye and commanding officer, who are actually brother and sister, are transported through space and time by a device created by the National Weapons Research Laboratory to the world where maso and WCS originated, Midgard.
  • With the defeat of the Red Eye commander, the Legion are no longer able to coordinate unified attacks. The physical threat of the Legion came to an end, however White Chlorination Syndrome continues to spread rapidly across the planet.

2032[]

February[]

  • With the threat of WCS spiraling out of control and no cure in sight, the twin processes of Gestaltization and Replicantization are revealed to the public.
  • Wealthy upper-class citizens are the first to enter the program.

March[]

  • People all over the world undergo Gestaltization, with their corresponding Replicants also being created. Due to the high costs involved with the process, the rich segments of society are initially given preference to the Gestalt conversion. The Gestalts created are put to sleep until the world recovers from the global pandemic.
  • The Replicant System, which can continue the process of Replicant production as long as necessary, is created at this time. Androids, which can operate indefinitely, are placed in strategic points throughout the world as overseers of the Replicants' activities and charged with maintenance of the system.
  • Replicants created from Project Gestalt are engineered with an immunity to White Chlorination Syndrome and given minimal sentience to follow basic commands by the android overseers. They are tasked with exterminating the remaining Legion roaming the world and gathering the illness causing maso. The collected maso particles are returned to a "Celebrant Android," which in turn conducts a ceremony to transfer the foreign element to the parallel world from which it originated.

2033[]

  • And Then There Were None takes place.
  • The Grimoire Project is devised. Using "Multiple-Origin" technology, it becomes possible to embed a Gestalt into a book-like vessel. Thirteen "sealed books," beginning with Grimoire Noir and Grimoire Weiss, are created. Using the massive amount of energy created from the two Grimoires being activated simultaneously, it is possible to forcefully re-insert Gestalts into their corresponding Replicants en masse once the Legion and WCS are eradicated from the world.

2053 (Replicant) / 2049 (Gestalt)[]

The prologue of NieR takes place.
  • Research by "The World Purification Commission," the public face of Project Gestalt, discovers there is a high probability over time of Gestaltized souls losing their self-awareness and going berserk. These cases are referred to as "relapsed" Gestalts. If they are left unattended in this state, there is an almost certain chance of the death of the subject.
  • Analysis reveals that in order to stabilize a Gestalt's self-awareness, stable, purified maso must be extracted from a Gestaltized person who has maintained his being after the transformation. It is determined that Gestaltization via one of the sealed Grimoires would have the highest chance of producing this special "Original Gestalt." Grimoire Noir is selected for this task and several cloned duplicates of it are created.
  • The World Purification Commission, in conjunction with the Hamelin Organization, begins setting up experiments using the cloned grimoires. These experiments are disguised as relief centers in poverty stricken areas and refugee camps. These aid centers begin handing out the Grimoire Noir copies in hopes of finding a Gestalt attuned to the book's power. Nier, who had been living in such a region in what remains of the Shinjuku area, is tricked into entering one of the relief centers in hopes of gaining medicine for his sick younger sister (daughter in Gestalt), Yonah. Sensing something was amiss, they escape just as several failed candidates transform into relapsed Gestalts and begin going berserk.
  • Relapsed Gestalts pursue and attack Nier and Yonah while they take refuge in a supermarket. Seeing no way out of the situation, Nier offers himself up for Gestaltization to Grimoire Noir in order to protect her. He becomes the self-aware "Original Gestalt." During this time, Yonah also comes into contact with one of the Noir clones and accidentally undergoes the Gestalt conversion. Failing to sync up with the book's power, her Gestalt immediately begins to relapse.
  • The World Purification Commission soon comes into contact with Nier and convinces him that they can save Yonah by putting her relapsing Gestalt into cold sleep until Project Gestalt completes. In exchange, Nier must provide purified maso from his body in order to maintain the self-awareness of other Gestalts in the project. Nier accepts the offer and begins providing the maso to maintain the system. This continues for the next millennium and beyond.

26XX[]

2764[]

  • Replicants, who had been obediently scrubbing the world of contaminated maso and eradicating the final remnants of the Legion for the last several centuries under the androids' command, begin to develop sentience.

circa 3000[]

  • Most Replicants have acquired sentience by the beginning of the new millennium. Their development is influenced by their environmental stimuli and has little relation to their original Gestalts.
  • Several civilizations and cultures rapidly begin developing among the Replicants. Most gather around old world artifacts and buildings of significance. Technological development among the Replicants is roughly at the equivalent of medieval level.

3276[]

  • Despite newfound sentience, the Replicants' purification of the world continues under the influence of the androids. The remnants of the Legion decrease dramatically over the last centuries.
  • Hearing the legend of a forbidden land where one's greatest desire can be fulfilled, a young Replicant enters the ground where the final battle against the Legion commander, Red Eye, took place over a millennium ago: Jerusalem. Entering with the body of his dead lover into a thick white mist left in the wake of the slain Red Eye, the Replicant wishes for her resurrection.
  • Much to the desperate Replicant's surprise, his lover takes form from the mist. Her eyes burn a fiery red. The revived lover immediately tears the Replicant apart with an overwhelming display of force. A new Red Eye had been born.

3287[]

  • The revived Red Eye amasses the last remnants of the Legion under its command and begins a march of terror against the Replicants left protecting the world.
  • An android and four Replicants band together and challenge the Red Eye. After a massive battle, they manage to slay the commander and rout the last of the Legion.
  • The android conducts a ceremony to send the last of the corrupt maso left behind back to the parallel world. With the last of the Legion and the White Chlorination Syndrome causing maso eradicated, the purification of the world is complete.

3288[]

  • With the world purified, Gestalts begin to awaken as the next phase of Project Gestalt begins.
  • The newly self-aware Replicants see the Gestalts as body-snatching monsters, dubbed Shades, and begin attacking them on sight. Battles between Replicants and Gestalts begin to take place.
  • In regions where androids are solidly in control, Replicants are influenced into accepting the merge with Gestalts. The Gestalts safely return to their human bodies, though this is rare.

circa 3300[]

  • In areas where a peaceful merge between Gestalt and Replicants has failed, the Gestalts look toward the "Revival Ceremony" in the Grimoire Project in order to forcefully re-integrate.
  • Despite having been treated with Gestalt Nier's purified maso, re-awakened Gestalts begin to relapse and go berserk.
  • Gestalt Nier, who had been providing maso to maintain the Gestalt system for over 1000 years, begins to suspect Yonah will not be revived if this continues and he does not take action.

34XX (Replicant) / 33XX (Gestalt)[]

Shortly before the main events of NieR.

3465 (Replicant) / 3361 (Gestalt)[]

The main events of NieR take place.
  • Mountain of the Damned takes place.
  • Gestalt Nier obtains the original Grimoire Noir in order to return Yonah to her Replicant body.
  • Devola and Popola, two of the android overseers of Project Gestalt, assist Gestalt Nier's movements and set him up as the savior of the Gestalts as part of the program initiated by the World Purification Organization.
  • Also with the guidance of Devola and Popola, Replicant Nier obtains Grimoire Weiss. The androids have him acquire the Sealed Verses and try to have him realize the goal of the Grimoire Project by having him fuse Grimoire Weiss with Grimoire Noir.
  • Doubting the Grimoire Project, Gestalt Nier abducts Replicant Yonah. He plans to return Gestalt Yonah to her Replicant, and himself to Replicant Nier.

3470 (Replicant) / 3366 (Gestalt)[]

Ending A / B[]

  • Replicant Nier battles and defeats Devola and Popola.
  • Replicant Nier destroys Grimoire Noir and Gestalt Nier.
  • Gestalt Yonah sacrifices herself and disappears.
  • Around the World in 80 Days takes place.

Ending C[]

  • Nier kills Kainé.

Ending D[]

  • Nier gives up his existence for Kainé.
  • With the death of the Original Gestalt, Nier, and the destruction of the original Grimoire Noir, Project Gestalt is unable to proceed.
    • Without the Original Gestalt to provide purified maso to other Gestalts to retain their self-awareness, all Gestalts will eventually relapse and die out.
  • Without Devola and Popola to maintain the Replicant System, and the subsequent loss of data due to mass relapses coupled with the Replicants inability to reproduce, no further Replicants can be created.

Ending E / 3473 (Replicant)[]

3474 (Replicant)[]

3627[]

  • The Human Heritage Investigation Committee is established. As the population of Replicants declined, the loss of Old World buildings and information led to the creation of an organization that would investigate ruins and understand current circumstances.

3631[]

  • The Human Heritage Reclamation Management Organization is established out of the Human Heritage Investigation Committee. It was formed as an organization to protect, manage, restore, and revive the heritage of the Old World. After the suspension of Project Gestalt, it would assume a role as the de-facto central government of the androids.

4198[]

  • The last of humanity, the final Gestalts, go extinct.

circa 4200[]

  • Android manufacturing factories cease operation one after another. Android numbers gradually decline.

4514[]

  • Among the androids appear "Independists" who hold no loyalty to mankind. They garner much support.

4519[]

  • Strife begins between conservative androids and the Independists. After two weeks, the strife settles down and the Independists declare an independent nation in Australia. This event will later be known as the Independist Strife.

5012[]

July[]

  • On July 4, aliens arrive on Earth, launching various attacks around the world.

5013[]

  • The androids organize the "Army of Humanity." Factories are built in various locations to increase the production of combat models.

5024[]

  • The aliens begin producing machine lifeforms after conquering North and South America.

circa 5100[]

  • Due to the mass production of machine lifeforms, the androids begin losing territory at a steady pace. The Army of Humanity constructs a lunar storage facility to preserve both Old World culture and information about humanity. They also begin constructing orbital bases to use for combat.

5112[]

  • Over the course of the last century, Emil has created 85,943,258 clones of himself to fight the aliens.

5204[]

  • The Army of Humanity, in possession of 12 orbital bases, launch several large-scale descent missions. More than a dozen of these missions are carried out in the year, but they fail to give a decisive victory to the androids.

5645[]

6230[]

  • A "Dragon" weapon is built by the Army of Humanity and deployed in the Kingdom of Night. The Original Accord was also created around this same time.[2]

7645[]

  • An abandoned factory site explodes, a goliath structure emerging from it and heading towards outer space. The structure's identity is unknown, but at the time of its launch, a powerful electromagnetic interference is detected and causes malfunctions in allied and enemy units alike. Because of this, the chances of it being done by the aliens are low.

circa 7645[]

  • The machine lifeforms' invasion actions begin to decline, their control of 80% of Earth never increasing further. The Army of Humanity launches several operations to regain control of Earth, but they all end in failure, while the machine population continues to grow.

circa 11000[]

  • Sightings of alien ships and the aliens themselves begin to decline.

11306[]

  • The aliens are exterminated by the machine lifeforms.

11502[]

  • Near the equator line in the Pacific Ocean, a large floating city built by the machine lifeforms is discovered. The Army of Humanity codenames it "Atlantis." Two years later, it suddenly disappears under the waves.

11627[]

  • A "behemoth-class" machine lifeform appears out of the East Asian Seas. Once it reaches land, it unleashes a massive electromagnetic attack that destroys all androids within a ten kilometer radius. Various androids and machines within the range of a few hundred kilometers also experienced malfunctions. After a month of battle with the androids and machines alike, the massive machine disappeared into the Izu-Ogasawara trench.

11689[]

  • A goliath-class machine lifeform named Ernst declares independence from the rest of the machine lifeforms, forming the Forest Kingdom.

11732[]

  • During the 8th Machine War, the Army of Humanity employs a large-scale Resistance strategy. It is at this time that Anemone enters the war for the first time.

11810[]

  • A large explosion occurs in a research laboratory, meant to extract the cores of machine lifeforms, on the sixth orbital satellite base, Kaguya. Kaguya ceases to function and falls into the atmosphere.

11815[]

  • The experimental research facility "Labo" begins operating as a replacement for Kaguya. Labo primarily carries out development of anti-machine lifeform weapons.

11817[]

  • Ernst passes away. The second Forest King, Immanuel, is manufactured.

11928[]

  • The "Black Box" model powerplant is completed in Labo.

11932[]

April[]

  • In April, the anti-machine lifeform weapon "YoRHa" is approved for manufacturing.

11934[]

February[]

  • On February 14, Engels is manufactured.

August[]

  • On August 3, Engels is first deployed with three more of its kind in the Philippines. Their attack on the androids would have 11,345 casualties.

11937[]

July[]

  • On July 7, a large fire occurs on Labo. Among the casualties were YoRHa units undergoing experimental trials, including No. 2 and No. 9. As backups of the units exist in the Human Server on the moon, new units are manufactured.

September[]

  • On September 2, The first YoRHa unit is manufactured and sent to the surface.
  • Immanuel speaks his first words.

11938[]

September[]

  • Construction begins on a thirteenth orbital satellite base called the "Bunker."

11939[]

  • The 14th Machine War begins. It will have the most destruction of any previous war.

11940[]

November[]

  • The Bunker finishes construction.

December[]

  • The Bunker enters operational service. Commander White assumes position as the commander of the Bunker and all YoRHa forces.

11941[]

November[]

December[]

  • On December 8, the Pearl Harbor Descent Operation is carried out. The plan was for 16 prototype YoRHa units to gain control of a frontline enemy base at Pearl Harbor and destroy an enemy server in Mount Ka'ala. However, 12 units were lost in orbit during the descent into enemy territory. The operation was forcibly continued with the remaining four units: No.2, No.4, No.16, and No.21. By its end, all but No.2 were killed in action.

11942[]

January[]

  • On January 30, at 4:25 AM, 9S awakens in the Bunker for the first time.[3]

February[]

  • On February 2, M001 is established.

March[]

  • On March 1, a YoRHa prototype squad consisting of only male models, "M002," is formed.

May[]

  • On May 2, The M002 Squad receives a distress call and instructed to investigate.
  • On May 5, within M002, a coup d'etat breaks out. It is crushed two days later.

June[]

  • On June 5, YoRHa units who fled from M002 fuse with machine lifeforms and go berserk, continuing to multiply in the Western Pacific. Furthermore, the 400 year old machine city "Atlantis" resurfaces. Tens of thousands of network connected machine lifeforms launch an attack that causes immense damage to the Pacific Region. To counter this, an emergency operations center is established in the Bunker, their top priority being the subjugation of fused units.
    • The YoRHa Boys stage play, as well as the alternative version YoRHa Girls, are retellings of these events.

August[]

  • On August 7, at 4:00 AM, the fused berserk units are assaulted by 10,900 mechanized units of the Android Army Marine Corps' 1st Marine Division with YoRHa Type-E's at their core. After several days of battle, the destruction of the fused berserk units on Atlantis is confirmed.

11944[]

June[]

  • On June 6, the Army of Humanity initiates a blitzkrieg tactic with 4,500 units and touches down in the Cotentin Peninsula, Normandy, France. Eventually, the attack ends in failure as communications with the units are lost and 85% perish.

August[]

  • On August 1, the 215th Descent Operation is carried out by a YoRHa squad. During the engagement, special machine lifeforms who take in the bodies of their dead comrades are observed.

11945[]

February[]

  • On February 10, evidence of an intrusion in the Bunker's network is discovered. The records of this discovery are quickly erased.
  • On February 24, in order to suppress the learning and evolution of machine lifeforms within the network, the use of vaccines of Lv4 and higher is restricted.

March[]

The main events of NieR:Automata take place.
  • On March 10, the 243rd Descent Operation is carried out to destroy a Goliath-class machine in the Abandoned Factory.[4] Six YoRHa units, including 2B, are sent down. Even with four units shot down during descent and one MIA, the operation proceeds and the target is terminated.

April[]

  • On April 7, during hostilities with massive goliath-class machine lifeforms that appeared in the City Ruins, the enemy launched a self-destruct attack. As a result, a large sinkhole was formed. At the same time, an alien signal, which had not been picked up in centuries, was detected.

May[]

  • On May 2, while en route to port to re-supply, the carrier "Blue Ridge II" is attacked and sunk by a behemoth-class machine lifeform. To prevent it from reaching shore, all YoRHa units in the vicinity engage it.

June[]

  • On June 26, Commander White and most YoRHa units perish as the Bunker collapses. A "Tower" built by the machine lifeforms then rises from beneath the surface of the City Ruins.[5]

August[]

  • On August 6, a structure from the Tower is launched into space.[6]

September[]

  • On September 2, the androids declare the end of the 14th Machine War.
  • On September 5, 2B is reactivated. Pod 042 reactivates 2B as the destruction of the Tower also eliminated the Logic Virus.[7]
  • On September 19, 9S is reactivated.[7]

October[]

The NieR:Orchestra Concert 12024 [ the end of data ] takes place.
  • On October 22, 2B and 9S decide to scavenge for transporters to obtain necessary YoRHa-specific parts.
  • On October 25, the pair notice that the transporters contain messages and memories of the Old World. The information points to the existence of Eden, a hidden underground complex used to store YoRHa technologies. 2B and 9S begin traveling to the location.
    • During the journey, 2B realizes her black box is still damaged, however she keeps it a secret from 9S. Despite this, 9S takes notice and deduces the irreparable issue. After traversing a sandy area, the androids descend a spiral staircase into darkness. Inside is an abandoned alien ship. Ultimately, 2B and 9S arrive at a darkened chapel. The interior is littered with approximately 100 YoRHa android corpses surrounding a large, black sphere. The Pods are unable to discern the sphere's function, and 2B speculates that the chapel was used by the androids as a place of worship in their final hours. 2B reflects on the location, and she collapses as her black box fails. 9S curses and prays with 2B's demise. He watches as fragments of the YoRHa corpses' black boxes form a circle of light and repair 2B. The unknown black sphere crumbles and is destroyed. While the pair don't understand the strange occurrence, they suggest that it could have been a hidden feature of machine cores. Instead of focusing on fighting machines or protecting humanity, 2B and 9S agree to simply embrace the world as it is, no matter how sullied the journey's path might be.

11946[]

January[]

  • The machine lifeform peace faction, led by Pascal, formally sign an armistice with the Army of Humanity.

12422[]

September[]

  • On September 2, an android wearing black clothes is sighted. The machine lifeforms reconstruct their network.

12530[]

  • "Nobles" appear among the machine lifeforms.

12543[]

  • A civil war breaks out among the machine lifeforms. Excluding berserk units, this is their first internal conflict.

Notes[]

  1. ↑ YoRHa Girls is an alternative version of YoRHa Boys with a gender-swapped cast, considered to be on an alternate timeline altogether.
  2. ↑ NieR:Automata Ver1.1a contains various story changes in comparison to NieR:Automata, and is considered to be on an alternate timeline altogether.

References[]

  1. ↑ The Lost World ver.1.00, Grimoire NieR: Revised Edition p.287
    "Three years had passed since she'd parted ways with the Shade who once shared her body."
  2. ↑ Fire Sanctuary (April 3, 2020). New Revelations About Accord. Fire Sanctuary. Retrieved March 13, 2025 (Archive).
  3. ↑ NieR:Orchestra Concert 12018
    Pod 153: "January 30th, 11,942. 4:25 AM. YoRHa unit 9S deploys."
  4. ↑ NieR:Orchestra Concert 12018
    Pod 042: "March 10th. 4:02 PM. 243rd descent operation begins."
  5. ↑ NieR:Orchestra Concert 12018
    Pod 042: "June 26th. 2:30 AM. The Bunker falls. The same day. 5:46 AM. Signal lost for YoRHa unit 2B."
  6. ↑ NieR:Orchestra Concert 12018
    Pod 153: "August 6th. 8:15 AM. Collapse confirmed for the Tower and machine lifeform network. At that moment, Signal lost for YoRHa unit 9S."
  7. ↑ 7.0 7.1 NieR:Orchestra Concert 12024 [ the end of data ]
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