babes… are you blind? genuinely asking. i suggest you read chapter one again. bottom was bound (literally immobilized) as a form of “training” (which the bottom, by the way, was forced into) - this was NOT official bsdm play, there was no safe word. in this situation, while the bottom was helpless, the top touched the bottom’s dick through his pants UNASKED. he then proceeded to unzip the bottom’s pants DESPITE CLEAR REFUSAL (“stop. don’t open my pants. don’t touch me.”) and touched his dick through his underwear.
baby gurl next time before you plan to read something look at the tags, genre, and the picture i’m sure those things are enough to tell you that there’s going to be grape, abuse, torture, and assault ok good the bottom is already questioning his ability about it anyways the backstory or the girl is just his awakening to his feelings for the seme or the pleasure of being tied by him
anyways let me gets this straight he was force into it by the seme to tell/teach him what’s the proper way to tie them up by him being the example at first it was just it. but as soon he imagined himself in that situation he got excited, then the seme processed to teach/touch him cause the uke is feeling it more.
and as you can read he personally ask the seme to tie him up though i’m prettsure the seme staged a show to make him imagine again being tied up
bsdm is literally use physical restraints or commands so him being tied up and being force is the definition of bsdm

bro why did the top have to sexually assault the bottom???? this could have been so good…