I'm really digging this one, the art can rough, but the MC being the ugly teacher trying to get revenge and slowly training the daughter of his stolen crush is pretty engaging.
He even is slowly seducing her and convincing her to actually date him proper, but also preventing her from getting breast reduction and helping her with her body dismorphia.
Inner monolgues and the manga actually rooting for the fat ugly bastard is pretty rare, but I'm looking forward to more.
Author is really taking his time developing it too, so it should be a nice payoff when she finally agrees to be his women.