Maybe he wanted to selfishly keep Cheol for himself. Because outing Cheol is the same as making his familly reject him. Jossner973
Yes. He got mad at cheol for not choosing (minyeong) over his family. So minyeong wanted cheol's family to make the choice for him so cheol would have no choice but to choose minyeong. Unfortunately for minyeong, cheol chose the secret option c, running tf AWAY
After knowing everything about cheols situation It doesn’t make sense why minyoung would out cheol to his dad. Idk how that can ever be justified