Fourteen-year-old Suzuki Iruma has spent his entire life dealing with irresponsible parents who eventually sell him to a demon. Fortunately, the demon, Sullivan, only wants a grandson and adopts Iruma into his family before enrolling him at the prestigious Babyls Demon School. To survive, Iruma must keep his human identity a secret while navigating life among demons. With the help of his friends, he faces magical exams, dangerous adventures, and powerful rivals, gradually earning the respect of the demon world. Filled with comedy, heartwarming friendships, exciting battles, and magical mysteries, Welcome to Demon School is a beloved fantasy manga that continues to captivate readers.