Responses
Haesoo is the main character and the narrator, he's the only one with any development, his step brother doesn't have development either but Taekyung is still better for Haesoo even with what little we know of how much of a controlling asshole Joowon is.
I feel that Haesoo needs to develop as a character before he gets in a relationship with anyone. The way he is right now, depending on anyone who shows him sympathy is very unhealthy and can get him hurt in the future as well. So i do think that he needs to get some closure on his past issues so he can move forward