I just don't like Isechi at ALL! I see as not just immature but her infatuation and forcefulness is creepy as hell. If she were a man no one would not be calling this cute imo. I can't blame the former student for thinking that way because I am in the same boat as well. I do not see this relationship lasting. In many other stories I can more beyond this and not question it but here I just can't let it go. Maybe how she acted in the first couple of characters(sexual assaulting the teacher and then losing it when it doesn't go her way) just ruins her as a likeable character. I do what to see the end so I will power through.
but thats the thing with these kinda relationships and i dont mean teacher students entirely. not only is it teacher x student its 2 girls. it makes things twice as difficult and it seems she has to keep saying shes serious about being with another woman. remember japan see's teen lesbians has just a faze. just my opinion