Welcome to Demon School! Iruma-kun (2019)

Fourteen-year-old Iruma Suzuki finds himself in a bizarre predicament after his neglectful parents sell him to a demon. Unexpectedly, he is adopted by this demon, who becomes his doting grandfather and enrolls him in a Netherworld academy where he serves as principal. Navigating the peculiarities of demon school life, the timid Iruma confronts his fears, embraces new challenges, and embarks on a journey of self-discovery that could transform him into someone remarkable. As he adapts to his new environment, Iruma uncovers the strength he never knew he had.