When his father died , Denji was stuck with a huge debt and no way to pay it back . Thanks to a Devil dog he saved named Pochita , he's able to survive through odd jobs and killing Devils for the Yakuza. Pochita's chainsaw powers come in handy against these powerful demons . When the Yakuza betrays him and he's killed by the Zombie Devil , Pochita sacrifices himself to save his former master . Now Denji has been reborn as some kind of weird Devil-Human hybrid . He is now a Chainsaw Man ! Buy quality Chainsaw Man cosplay costumes at cheap prices ! Shop now and cosplay the character you like !