My Friend

 is sung by Pythagoras Trio's voice actors, Yusuke Shirai as Yamato Nikaido, Tsubasa Yonaga  as Mitsuki Izumi, and Takuya Eguchi  as Nagi Rokuya. The song lyrics are written by, and the song is composed by.

 was originally released within the game. If you clear Part 4 Chapter 18.3 it will be available within the normal lives. The full version of  was released digitally on November 30, 2019, and can be purchased on the iTunes Store, animelo mix, music.jp, mora, and Recochoku (レコチョク).

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= Lyrics =

= Appearances =

= Live Challenges =

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