I'm sure they won't mind as you didn't pay to read this one anyway. You read it free on an illegal site. So, good riddance to you too (on behalf of the author)
Suffering? U mean like he has pitiful past trauma or he suffers cause he's a jerk which one Nakano Miharu
Past trauma is fine too..
And.. Not jerk.. Maybe something like, he got beaten by someone else and there's uke there to help him get better? Or uke is the who lock him and beat him (I wish this exist ㅠㅠ)
I hope it doesn't disappoint