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in this last chapter, the brother of the girl who drowned is the one who's been making all the students disappear. Seems like his targets were people who knew his sister and my first guess is that he's trying to free her soul? Sensei can see ghost/souls/mythical creatures whatever, because he himself is a phenomenon but isn't aware of it. That's why Sensei sees the girl whenever he's near her brother(2nd theory) because I think the brother is the actual killer. Especially after talking about spiritual rituals, His definitely into some satanic shit.
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I don't think I've paid much attention to him. Tho that's not always true, he was awake when sensei was being taken by the flower boy. From what I know he was only asleep when those little elfs tried to harm him and then they hide when he woke up. But I think they were just trying to make sensei look crazy in front of him. Like they work in the dark/secret ya know. Maybe I'll have to read it again and pay more attention to magaki
does anyone understand whats happening or are we all here for the sex scenes