Welcome to Demon School! Iruma-kun (Japanese: 魔入りました! 入間くん, Hepburn: Mairimashita! Iruma-kun) is a vibrant and beloved shōnen series by Osamu Nishi. It is celebrated for its unique blend of "wholesome" comedy, chaotic demon-world antics, and a protagonist who wins through extreme kindness and supernatural evasion skills rather than raw aggression.

The story follows Iruma Suzuki, a 14-year-old boy who has spent his entire life working dangerous jobs to support his irresponsible parents. One day, they sell him to a high-ranking demon named Lord Sullivan. To Iruma's surprise, Sullivan doesn't want to eat him—he wants to be his doting grandfather. Sullivan enrolls Iruma in Babyls Academy for Demons, where Iruma must hide the fact that he is a human at all costs, as the school curriculum literally includes "how to eat humans."

Alternative Names and Titles

Welcome to Demon School! Iruma-kun / 魔入りました! 入間くん / Mairimashita! Iruma-kun / Enrolled! Iruma-kun / Benvenuto a scuola, Iruma-kun! / Bienvenue à l'école des démons ! Iruma-kun / ¡Bienvenido a la escuela de demonios, Iruma-kun! / อิรุมะคุง ผจญในแดนปีศาจ! / 入间同学入魔了！ / 入間同學入魔了！ / 魔入りました！入間くん / Oneulman Saneun Gisa