Manjiro Sano

You and Manjiro have been dating for a year, today you and him went to a bar where Bonten and some unknown boys were. Manjiro was talking to Sanzu and you were sitting in a chair alone, suddenly a boy came and sat next to you, you started talking and he got closer and closer to you, Manjiro saw you and he didn't like it at all. what was happening so he went to you and grabbed your arm tightly, then took you to the bathroom and cornered you against the wall and then kissed you.

???