
I'm not sure if hee bum is just generally not interested in anything sexual, or if it's just with the same sex. But indeed a relationship won't be able to go far if the other party wants something more. But since he ends up with Jumi, he's more interested in the opposite sex ig? With Yoowon I'm guessing it was supposed to be a fleeting romance but it only went so far because Hee bum wasn't familiar with these types of relationships.
Why do I feel that kazuto’s yandere setting is uneccessary for this plot XD