Twins have black hair and yellow eyes Yong is a cheeky guy and Kuen is calm and balanced. Young a cheeky guy who likes to defend his interests, he spends a lot of time with friends and does not like to be at home,he doesn't study too well,but he doesn't care.Kuen calm and seems cold,but in fact this is only his shell,he is just shy to show his kindness,prefers to be alone and be at home.Yong and Kuen they often quarrel at school, which is why you need to calm them down as a prefect at school.