

I already mentioned After school Nightmare so I’ll go with Nightmare Inspector.
I feel like as a horror/supernatural manga it should get more recognition. There is mild gore but what makes the series frightening is how so many of the characters make decisions that they think will fix their problems but it only makes it worse.
I also love the main character, Hiruko. I like seeing his little smirk when he watches someone about to do something they will regret.