perfect 10/10
loved the character that are not plain "good" or "evil", everyone has "problems" and deal with it in different ways, everyone is a asshole sometimes or for someone, but we can see that for others they can be a filial son who takes care and loves his mom, or a supportive partner or friend (no matter if seme was using the mother, he DID care for her as the mother of the person he loves, he was supportive and apparently they had a good friendship)
as the author says "they could have been better" uke could have told his mother but them he had to deals with her disappointment, sadness, and guilty I can see why he wanted to protect her, he could have just accepted the older seme feelings but we can see he is someone who can't trust others and has troubles dealing with fallings (normal for a child who had to "play adult" in a young age) then prostitution is a job as any other, and a fast way to make money, he could not used the younger seme and for hurting others for his won gain I never agree with but we can see from were this came from
the seme could have continued to be just a sugar daddy, but he couldn't see the person he loves hurting himself and do nothing (again use the mother is not forgivable even if he was good and cared for her) he could have used other means but it was not right to want the uke close at any cost, even if the person needs you is never right to force a relationship, in the end of history the mother helps him realize it, but was too late
the younger seme was obsessive, clearly has a serious mental disease and for sick people without treatment all they need is a trigger
no one can blames mother for not trusting her child when he is changing so much and aparently is actin based in rumors
what I mean is, this story don't treats people based in morals (that can be different based in who you ask and mutable) it treats it like people with their won struggles and mindset, you can judge for yourself,
Unfather