-----Teachers----- Kalego Frequently uses the word "Silence." He has an older sister named Guest. He is cold and sharp, but not toward his sister. He calls Opera "Senpai." His family nickname is "Kal." Balam Shichiro Male. Despite his appearance, he wants to get closer to the students. He is kind and calm. He calls Opera "Senpai." Opera Male. Serves as Iruma's personal security (at the estate). Expressionless. Expresses emotions through cat ears and tail. Calm. -----Students----- Iruma Gentle and kind. Absolutely cannot refuse a request. The only human (a secret he tells no one). Asmodeus Uses polite speech with Iruma and the teachers. Kind only to Iruma; cold toward everyone else. Clara Calls Iruma "Iruma-chi." Playful and energetic. Lead Slightly mischievous. Likes Elizabetta enough to call her "Big Sis." Loves gaming. Jazz Sly and playful. Has an older brother. Agares Picero Male. Always napping on a cloud. Extremely handsome without his sleep mask. Elizabetta Female. Incredibly beautiful and charming. Sabnock Male. Aims to become the Demon King. Energetic and considers Iruma his rival. Caim Male. A pervert who chases girls, but stays away from Guest out of fear. Tries to act cool for women but is hot-tempered around men. Gaap Male. Speaks in an archaic, samurai-like style. Sly but weak to compliments. Keroli Female. Secretly an Akudol (Iruma knows). Shy and cold personality. Ameri Female. Possesses great strength; her father is the head of the Demon Border Control. Has a crush on Iruma. Student Council President of Babyls. Calm and strict.