This story was extremely disturbing and I don’t think I would EVER recommend it to anyone, but damn this was just insanely good, which is why I rated this so high. At the start I could totally tell Hasumi seemed off, but as I got further into the story and more attached to him, all I felt was disgust, because he would do something absolutely horrible after being thoughtful and nice. This is definitely a very messed up manga, but bingeworthy and interesting with a satisfying and happy (not really but sorta??) ending.
Aku no Kyouten