Denji is the main character of Chainsaw Man. Along with his dog, Pochita, together they make a living hunting down demons in order to pay-back an impossible debt owed by Denji's parents, to the Yakuza. The story starts with the dirt-poor 16 year old, and his dog, living and surviving off of the streets. However, Pochita isn't your average dog, he's a demon dog, which Denji saved on the verge of death. Together they go about hunting and slaying demons, big and small, all sorts. After being betrayed and killed, Pochita sacrifices himself,and merges with Denji's heart. Denji becomes the Chainsaw Man, a feral, half-human, half-demon creature with Chainsaws protruding out of his arms and head. After one of the top members takes a liking to Denji, the misfit is then recruited to join the Public Safety Devil Hunters, Japan's Governmental Department devoted to hunting demons. He is taken, and for once in his life, he feels safe, secure, and happy. But it's not all fun and games hunting down demons, Denji becomes a target, in the strangest circumstances; bigger and stronger demons begin showing up, in a strategic and prepared pattern, for an unseen reason.