Monster Sonic!: Senritsu no Lucifer, Tada Hitotsu no Hajimari no Uta
English title: Monster Sonic!: A Rhapsody Called Lucy -The Very First Song-
Japanese title: モンストアニメ GWスペシャル番外編「センリツのルシファー ただひとつの始まりの歌」
Type: ONA
Episodes: 1
Source: Game
Genres: Fantasy
Studios: LIDENFILMS Kyoto Studio
Producers: XFLAG Pictures
Duration: 21 min
Rating: PG-13 - Teens 13 or older

Golden Week Special episode of Monster Strike Anime.

"Change the world with music? Foolish."

Lucifer's world stops after her band disbands. Meaningless days pass, until she meets her cousin Satan and his bandmate Ibaraki Douji. They ask her to join their indie band, the "Wicked Pistols." Satan talks about his dream of going major after winning the MONSTERS ROCK competition, only for Lucifer to reject him outright. However, Lucifer's heart begins to thaw after a certain event...

(Source: Official YouTube Channel)