Chainsaw Man

The world is one ravaged by Devils, otherworldly monsters who feed on human fear. Despite their antagonistic nature, humans can actually form alliances with these Devils and gain powers of their own. The protagonist, a downtrodden young man named Denji, works to clear his father's massive debt to the yakuza. Aiding him on this journey is Pochita, a Devil in disguise as a dog, who has a chainsaw for a nose.