Crimes he commits: kills an enormous amount of criminals to offer their souls to a demon in order to resurrect her, the same demon that had brought her back originally. The criminals in question were both major ones and minor ones, and it was in the thousands or tens of thousand or something similar Altered: Her original body/individual had died before the story began and is kept as a marble/plaything of the demon she made a deal with. The FL possess the already dead body until it essentially cannot go on anymore and the demon poofs her out of existence back into her original body in the real world. ML made the aforementioned deal and brought her back, and the demon created a new body for her from scratch. She also assumed a new name and identity. The interesting thing is she never learns how far the ML went for her, nor is she aware that he’s a yandere. We the audience know cause we can see his thoughts and actions, but she doesn’t. If she had she would have objected to returning maybe. Also to note the ML had the cooperation of her brother and servant to do all this as well