Can anyone remind me why the teacher is so obsessed with him to the point of even using an alternate persona to fuck him?
If I remember correctly, it started from the 'Hachi' side (that
is a genuine facet of who she is) and then she started getting close to him as 'Enjo' as well. She just likes him, I guess? He's not a bad dude either and they get along pretty well (as Hachi).
Pretty sure she was just blowing off steam at the start.