IDOLiSH7 is a 7-member group consisting of Iori Izumi, Yamato Nikaido as the leader, Mitsuki Izumi, Tamaki Yotsuba, Sogo Osaka, Nagi Rokuya, and Riku Nanase as the center. Iori Izumi is Mitsuki Izumi's younger brother who has a "cool" personality. His parents run a cake shop called “Fonte Chocolat”, and the interior is decorated cutely, which influences him to like cute things in the end.

Iori carries a superior air but has proper manners, although he possesses a poisonous tongue. 