ZONE OF OVERLAP

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

 was originally released within the game on May 29, 2019 as the fourth song of Part 4. If you clear Part 4 - Chapter 9 Rain Falling in Tetrarchy, it will be available to play within the normal lives. The full version of the song was released as part of the Bang!Bang!Bang! Single on January 15, 2020. 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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