Dejavu

 is sung by Minami Natsume's voice actor, Nishiyama Koutarou. The song lyrics are written by, and the song is composed and arranged by.

 can be purchased digitally on the iTunes Store, animelo mix, music.jp, mora, and Recochoku (レコチョク).  was also released within the game on June 8, 2019, Minami Natsume's birthday. If you clear Part 1 Chapter 1.6 it will be available within the normal lives.

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