He is in the most of the earlier chapters what happened to him after that i cant read all of this iknow
So like I think ngl that he ended up with that kid he tutored dude he was tutoring a middle schooler while he was fresh into college and when the kid got older and ended up trying to apply for college that’s when the kid made his move and Dohyun has been dating him since
Which chapters Dohyun appear