Shitsurengo, Kenaku datta Osananajimi Ga sato Kashi Mitai ni Amai - Sugar After Bitter - Vol. 2 Ch. 12 - Bitter first, later sugar.

[RichardPercival]

Alright, that ruined it, that's the third time this dude has bowed down to someone.
You LITERALLY have the evidence of him being a piece of shit, why are you begging him?
Just blackmail him, or go straight to the teachers and report him.
That was awful.