Labyrinth

Labyrinth is sung by Haruka Isumi's voice actor, Yuya Hirose. The song lyrics were written by, the song was composed by , it was arranged by , and it was both composed and arranged by.

Labyrinth was originally released as a single on December 6, 2019, Haruka Isumi's birthday. It can be purchased digitally on the iTunes Store, animelo mix, music.jp, mora, and Recochoku (レコチョク). It was also added to the game on December 6, 2019, and becomes available in normal lives after clearing Part 1 Chapter 1.6.