Viva! Fantastic Life!!!!!!!

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

 was released on June 20, 2018 as the coupling track to the Nanatsuiro REALiZE Single, which can be purchased digitally on the iTunes Store, animelo mix, music.jp, mora, and Recochoku (レコチョク); it can also be purchased physically. It was released in the game on September 7, 2019. If you clear Part 1 Chapter 1.6 it will be available to play within the normal lives. Before being released within the game, it was featured as a song in the AFTER 2nd LIVE: REUNION and ZOOL Anniversary 2019 events.

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