お別れ囃子 (Owakare Bayashi)

Background
The song was originally composed by Koyabashi Onyx with Meaw for the ending theme of ''Honto ni Atta! Reibai-sensei'' anime.

After 4 years of the song was released as a single, a new version featuring Hatsune Miku and Sachiko respectively was released on Koyabashi Onyx's channel.