mine are gender benders. specifically the ones where the MC is disguised/transformed into the opposite gender and the love interest is also the opposite gender. i hate those so much because in the end it's just a straight romance that's queer baiting.
love triangles with an unworthy heroine. Pisses me off seeing this random girl getting two hot males attached to her without her even doin anything. Also the ones that literally support paedophilia, its disgusting reply