ok so he's pretty much horny for her, but can't past her because she was his first "love" in some way, but now I can't understand Tabe right now, why she was crying? she's really fucked up and she knows it, she likes it, but guess is not the same if Maruo is not there for her?
Sister seems to really care, but family might be still hiding something, at least that's the feeling I got, wonder what she will find on her phone next chapter? guess something to do with the teacher, maybe she will try to focus to make Tabe to leave Maruo in some way so he can be free from her?
And the school did not tell them? I know japan likes to hide everything under the rug because of reputation, but not telling her family at all?