Difference is that the uke was a victim of abuse and due to that suffers from trauma, he doesn't hurt, manipulate or do anything to anyone like our seme, lmao.
Tengoku is a truly disgusting individual and the excuses made for such a character actually amazes. I don't even remotely sorry for a monster like him. His childhood involved a lack of parental love so what he seeks out to destroy the one source of love given to him because he went crazed jealous over his brother's wandering attention? You have to be fucking kidding me. Ten Count is up there with this dumpster fire of a "psychological" romance. Even if there was any realism or readers who apparently overlook and enjoy a man who cheats, rapes, exploites, manipulates because god for bid he wasn't the center of attention in his childhood is some misunderstood man-child. It actually amazes me authors' writes plot like this from start to finish and enjoy gaslighting the entire development of a toxic character to give them an underserved happy ending. Just thinking about it any longer gives me a headache.
They are both so messed up. I like their moments of intimacy though - very intense. I HATE that he had ‘fun’ with schoolboys though. Not cool. But... he slept with all his brothers lovers as a proxy for sleeping with his brother? Lol. The seme is way more messed up than the uke.