One of the leads has a condition like Will Graham in the The Red Dragon (Hannibal series) but his is so much more intense and hardcore, he literally embodies deaths and its physical effects, so it's kinda supernatural. It's episodic so the chapters have different cases except for 5 and 6 which are connected. This is so goooood too, what da heck is with this author, both the art style and plot are so gripping, my emotions were so invested everytime. I love this, absolutely love this. Even if it's just like this, by that seinen and not BL, I don't care, there was absolutely no queer baiting anyway and the relationship could definitely work as strong friendship and nothing more, nonetheless, the sequel apparently is BL, so off to read that one and see how sensei handles the transition of friendship to romance.
Stigmata - Seikon Sousa