妄想感傷代償連盟 妄想感傷代償聯盟 妄想感伤代偿联盟 망상감상대상연맹
A Vocaloid song by DECO*27 featuring Hatsune Miku.
YoutubeNiconico
The song also has an official Chinese version featuring Hatsune Miku V4C
Bilibili