The Abnormal Class (問題児クラス, Abunōmaru Kurasu) is a unit credited in the TV anime Welcome to Demon School! Iruma-kun, named after the in-story class of problem students to which the protagonist Iruma and his classmates belong. It performs "Lilith Carpet" (リリス・カーペット), an insert song in episode 7 of the anime's fourth series that was also used as the ending theme, although the credits list it only as an insert song. The song has lyrics by Osamu Nishi and Nozomu Ōshima, music by Akimitsu Honma and Yayoi Sekimukai, and arrangement by Yayoi Sekimukai.
