Zankoku na Tenshi no Thesis

is a song covered by Roselia.

The full version of the song is included in the album BanG Dream! Girls Band Party! Cover Collection Vol.3, which was released on December 18, 2019.

It is the first Challenge Medley song for the event Briar Road ~Unseen Finale~.

It was originally sung by Takahashi Youko and used as the opening theme for the anime.

Video
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Live Performances

 * February 21, 2019: Hitze
 * August 3-4, 2019: Flamme & Wasser
 * May 4, 2023: JAPAN JAM 2023