>>282039527
>>282037129
>Seishun bakusou
That's the name of OP picrel
And yeah, my picrel is the same girl
>>282039684
>>282039683
She apparently choose willingly to fuck with the teacher the time MC discovered them.
I still haven't read the whole MTL, so I don't know her whole intentions, but it seems the teacher and MC went to punches and the teacher got reported and fired or something like that. Because even his wife heard about the whole thing and kicked him out.
Later when the girl sister confronted it about it she tried to said it was her choice and she wasn't a victim, but then started crying when her sister pointed out her actions hurt MC