In the manga, the titular character (who is 14 years old) entertains a relation with an older boy (who is 17 years old). In the anime, the boy is supposedly older, even if his age is never clearly stated (he is in college). Season 1: a young girl character falls in unrequited love with an adult villain. He uses these feelings to manipulate her into meeting up with him alone to lure out the titular character on multiple occasions. At the end of this arc, he genuinely falls in love with the girl before dying. Additionnally, an episode shows a middle school student admitting to spying on/taking photos of his unknowing teacher. S2E37: the titular character is captured by a male antagonist. She falls unconscious and wakes up on a bed in different clothing. The villain tells her that he would “do anything to make her his", and is about to physically force her to kiss him when another man intervenes at the last second.