Chainsaw Man

When his father died, Denji was stuck with a huge debt and no way to pay it back. But thanks to the help of a Devil dog named Pochita, he is able to scrape by as a Devil Hunter working for the Yakuza. When the mob betrays Denji and he's killed by a Devil, Pochita sacrifices himself to revive Denji. Now Denji has been reborn as some kind of weird Devil-Human hybrid. He is Chainsaw Man.