Original (by ZUN):
廃獄ララバイ
Lullaby of Deserted Hell
Subterranean Animism Stage 5 Theme
Arrangement: kenya, Yuma Mizonokuchi (Innocent Key)
Lyrics: MAKI
Vocals: 3L
Circle: セブンスヘブンMAXION (Seventh-Heaven Maxion)
HP:
http://shm.jpn.org/Album: 爛漫 (ranman)
Catalogue Number: SHM-0020
Released at 博麗神社例大祭6. (Hakurei Jinja Reitaisai 6)