Chainsaw Man
I will rate this after I am done with other anime and stuff
I have yet to write this... because I am lazy or something
Denji is a demon hunter for the Yakuza until the day comes when the Yakuza is betrayed and turned into a zombie, and then Denji is subsequently killed by the zombie horde. Thankfully Denji's faithful companion Pochita is able to save Denji's life by giving Denji his heart which turns Denji into something not quite human but not quite demon either. That is when Division four of the public safety department shows up and recruits Denji to their side to take down the Gun Demon.