Responses
Not really, in a convoluted way, domestic violence could've been the catalyst for that disgusting nature. Force, force, force. But hey, he should've known better. But like, it's not like this shit was made to be a masterpiece, the characters are meant to be one dimensional for the reader's satisfaction (dunno some people like that). Author probably just wanted to make quick a buck lol.
Seme is clearly deranged, crazy and overbearing (bad way), not really surprising since his family was probably falling apart plus he got screamed at and called disgusting by his very close friend. Uke's insensitive, stupid and overall annoying in my opinion.