This story can be hard to get into but once you do its a masterpiece. The main characters' struggle with killing monsters while simultaneously becoming one himself is beautifully written. As the story continues you wonder who you can trust around the protagonist. The art is beautifully done and adds to the horror elements in the storyline perfectly. While it's technically a horror manga the psychological aspects in the plot are topnotch and really make you feel for the characters. The romance in the story is neither sappy nor lustful but develops like a normal relationship would (or as normal as it can during the story's plot). Oneof the top horror mangas that I love to reread.