People complain about this manga because a yandere acts like a yandere (fork found in kitchen) and then proceed to worship manhwas like Killing Stalking
Honestly, I don't know what was going through my mind when I decided to read No Longer Human and then this... I can say this was one of the most depressing experiences I've ever had in my short life.
Leave me alone in a room with him and we'll both end up pregnant.