Mairimashita! Iruma-kun

Synopsis

Iruma Suzuki, fourteen years old, can’t say no to any request. His irresponsible parents make him work dangerous job after dangerous job to support them, and then one day they sell him to a demon! But, much to his surprise, the demon wants to adopt Iruma as his grandson? Unable to refuse his request, Iruma becomes the grandson of the great demon Sullivan. His new doting demon grandfather enrolls him in Demon School Babyls – where Sullivan is coincidentally the principal. Thus begins Iruma-kun's extraordinary school life among the otherworldly, meeting many colorful demons, taking on daunting challenges, and facing his true self as he rises to become someone great.

Cozy magical slice of life with occasional urban terrorism.