Secret

 (, Himitsu) is the fifth episode of the fist season and the fifth episode overall of the IDOLiSH7 Anime adaptation being produced by TROYCA. The official air date of the episode was on January 21, 2018.

Overview
With the ban on singing and dancing lifted, the boys eagerly resume practicing and performing. However, something's not right with Riku. Iori soon discovers the nature of the secret he's been hiding, but Riku begs him not to tell the others.

Characters in Order of Appearance
Characters in italic are only seen briefly and have yet to make a proper appearance.

Song Appearances
Songs in italic are only heard briefly.