What happens when the gangster Kyung and playboy Zico was in an arranged marriage? Will they fall for each other or is it the other way round? Top Zico, Bottom Kyung! LOL, I at descriptions!

Kim jongin or Kai, the kingka and the school most cold-hearted gangleader, fell in love with the girl named Jung Eunbi who is his playmate when they were young and very kind-hearted and innocent. However, Eunbi has that heart disease that killed her and Kai's world start to crush down. What he doesn't know is that Eunbi has a older twin sister named (You, OC)Darbi who was sent to America by her parents for her bratty attitude. What surprised him the most was the rude and 'don't give a ' D