Responses

Yeah, you later learn Jaehong is gay and pretty promiscuous so Jaeyoung doesn’t introduce them until something like 81 months into dating or something because he fears Sangwoo would prefer Jaehong. Jaehong tries to stop them from getting married so Jaeyoung gives Jaehong 2 hrs to try to seduce Sangwoo but Sangwoo shuts him down pretty savagely. It’s all an told in an extra chapter after the 4 main volume concludes though and not really a real concerning issue.
I mean I ask this out of my curiosity and my theory
.
.
.
.
Is jae young's identical brother in the love affair, or cause any misunderstandings between the couple in the near future, since jaehong(his name) somewhat has the same interest in studying like sang woo, and he's appeared to be much more practical & stoic manner, maybe make jaeyoung jealous becaz of their compatibility ??? ╮( ̄▽ ̄)╭