Poisonous Gangster

 is sung by. The song lyrics are written by and the song is composed by.

 was originally released within the game on July 4, 2017 as the fourth song of Part 3 and as ZOOL's first song within the game. If you clear Part 3 - Chapter 10 A Tetrarchy of Insanity and Ruin it will be available within the normal lives.  was released on August 30, 2017 as part of ZOOL's Debut CD single, Poisonous Gangster Single. It can be purchased digitally on the iTunes Store, animelo mix, music.jp, mora, and Recochoku (レコチョク).

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