Mairimashita! Iruma-kun

In Mairimashita! Iruma-kun, fourteen-year-old Iruma Suzuki has spent his life enduring one misfortune after another, trapped in a family that makes him work constantly because of his irresponsible parents. Everything changes when they sell him to Sullivan, a powerful demon who has long wanted a grandchild and immediately brings Iruma into his world. Sullivan enrolls him in Babyls, the demon school where students are expected to sharpen their abilities, compete, and prove themselves worthy of the next Demon King. Iruma is determined to survive by hiding the fact that he is human and keeping a low profile, but that plan collapses almost immediately. Sullivan is also the school chairman, and everyone expects him to become the next Demon King, so Iruma cannot avoid attention. His connection to such a prominent figure quickly turns him into a target of curiosity and expectation. When he accidentally chants a forbidden spell in front of the entire school, he gains an unwanted reputation and is pulled into a chain of bizarre adventures. As he navigates demon society, Iruma must rely on caution, adaptability, and his growing bonds with those around him to stay one step ahead.