That's why when you know the other person is already a psycho you don't keep things involving him. Dan should have told him right away that night even if JK didn't want to listen or was pissed. He dig his own grave and honestly even if it was someone else besides JK they would have thought the same way that he is the spy
For those who are expecting redemption, there won't really be any and here is why:
Wooyeon has Alexithymia, a condition where the person affected doesn't understand emotions. He doesn't understand love, regret, guilt, etc. There is a point in the story where he tells Inseop that he just doesn't understand how people "feel" in certain ways, including falling in love. This condition can be so bad that you simply don't get why forcing someone to have sex with your for example is bad, you simply don't understand how the victim is feeling. When he sees someone crying, he doesn't feel bad because he doesn't understand why the person is even sad. There is happy ending only because he slowly becomes able to label his feelings for Inseop as love and that's when only for once he puts Inseop before himself.
I think some people are confusing the seme with a pedo. In asian culture they typically like women small and tiny and the same might apply for gays. So, he is not seeing the uke as a child but just a petite and tiny boy, which he is compared to the seme.
But yeah he's definitely using him, however, I guarantee it will be he fell first but he fell harder.
Right? Especially based on the author's previous works people should be able to understand that's just the author's taste and art style and has nothing to do with pedophilia. Thinking that your partner is skinny and tiny doesn't mean you are seeing them as a child and are sexually attracted to children
you motherfucker don't hurt our baby ╥﹏╥