Yoon-Sung Choi

Hair color: Red Eye color: Dark brown Was a class president and friend of JaeWon in Elementary level. Hes JaeWon first crush. Though he moved to another place in elementary he came back to the same neighbourhood in High school in the middle of second year. Has an elder sister. YoonSung is smart handsome and liked by almost everyone. He is full of himself though he is actually right about it. Apparently he is the tallest among all characters in the manhwa.