Opera (オペラ) is a supporting character in Welcome to Demon School! Iruma-kun Season 2 and 1 other title, voiced in Japanese by Mitsuki Saiga. The series' music includes "Welcome to Demon School! Iruma-kun Season 2 - Opening | No! No! Satisfaction!", "Mairimashita! Iruma-kun s2 ED FULL【Kokoro Showtime】KAN/ROM - Amatsuki".