NATSU☆Shiyouze! (TRIGGER Version)

 (NATSU☆しようぜ！, NATSU☆Shiyouze!) is sung by. The song lyrics are written by, and the song is composed by.

 was originally released within the game. If you clear Part 1 Chapter 11.4 of the story it will be available within the normal lives.  was released on December 2, 2015 as part of the SECRET NIGHT Single, which can be purchased digitally on the iTunes Store, animelo mix, music.jp, mora, and Recochoku (レコチョク).

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