Responses
I thought it fits but now that I think about it I was probably mistaken...
Sorry, following
ff
http://www.mangago.zone/read-manga/maki_chan_wa_kare_to_sex_shitai/
This maybe? It kind of fits your description but not exactly it in terms of sequence?
so the uke gets raped by some bully repeatedly but then he gets in a relationship with the seme who helps him deal with the trauma of the rape. then the seme beats the uke’s rapist up because he started describing how he would rape the uke. this is so vague but this is literally all i can remember