NATSU☆Shiyouze! (TRIGGER Version)

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

NATSU☆Shiyouze! was originally released within the game. It becomes available in normal lives after clearing Part 1 Chapter 11.4. NATSU☆Shiyouze! 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).