Involvement with NierEdit
The achievement, Legendary Gardener, is for successfully cultivating a Lunar Tear.
In the Grimoire Nier, the white flowers in the lake near Nier's house are said to be from when Nier was constructing a hair pin/ribbon out of Lunar Tears, while waiting to see Yonah and Kainé again. He had several failed attempts before finally being able to make one. He couldn't bear to throw the flowers from the failed attempts away, so he decorated the lake with them.
Involvement with KainéEdit
When Kainé was young and still lived with her grandmother, she was given a lei of Lunar Tears. This same one was found in Kainé's Shack and almost taken by Nier, but Kainé attacked him before he could.
After obtaining Ending D, all save files will be erased. But, when going back to the title screen, a Lunar Tear now appears.
- "Something about this flower fills me with an emotion I don't really understand. It's like something's pushing down on my chest really hard..."
- —Emil's thoughts about the Lunar Tear
Lunar Tears play a role in the quest Emil's Memories. 2B and 9S are tasked with finding the Lunar Tears and informing Emil, as they restore parts of Emil's memories. As a reward, players obtain the Lunar Tear as a Key Item. Once used while playing as 2B it appears in her hair, similar to Kainé.