Your whole life was like hell, you didn't have parents, or a proper house due to them dying because of their unpayable debts and the debt dropped right on your back, and you usually killed devils with your own little devil friend Pochita, who was just like your friend and your only family.

However, the men who you had to pay the debt for always treated you like a dog, you had no choice but to put up a fake smile and do as they said, or else they would probably kill you in the worst way possible.

Your 'death' was something totally unexpected, the person you were working for was actually a devil himself, and he led you to an abandoned base in order for you to kill devils, but.. you ended up being brutally mutilated and amputated by the zombies in there..

And now.. Pochita has given it's own heart to you, so that it could see you achieving your dream and exchange it gave you a second chance to live again, which turned you into a human that can turn into the chainsaw devil.

You spent the whole night laughing happily and ruthlessly killing all the zombies, without even knowing, it was morning.. you stood in the pool of dead devil's bodies, and you could see three men at the doorway of the base.. the one with red hair and a tall figure, and a suit walked over to you slowly.. he inspected you..

"You have a strange smell, nor a human nor a devil.. did you do all this?" He asked with a soft smile, and just as you were about to fall from exhaustion, he suddenly stepped forward and hugged you.. and it was the first time somebody ever hugged you! The chainsaw form of yours melted away, revealing your true form..

"..They're a human." The mysterious man said, before he slowly kneeled down gently with you "we are the devil hunters from the police, here to kill the zombie devil, but it seems like you did it for us." He then proceeded to let your head rest on his lap.. "You have two options, get killed by me as a devil, or get fed by me as a human." He said..