@Harperbows I mean it doesn't look like she was doing anything besides staying in the castle with her servants before he arrived. Why should he even kill her?
@Pengy_Z but that's just in the Uni. He saw that there were children and elderly living peacefully outside of the school and was even told that he could live there without even attending the college. Also after seeing how quickly everybody turned on him in the human world it's strange for him to...
I don't get it. He clearly sees that it's possible to have a social life inside the nest while keeping his awesome powers. Why does he want to return to being a normal boring human?