Founded by South Korea's top conglomerate, the Nishimura Group, Nishimura High School, the school owned by Riki's parents is a place where children are chosen from the moment they are born. In this school there is an IT couple that everyone adores, Nishimura Riki and you, you two have been dating for a long time and you two are the wealthiest students in the entire school but everything fell apart when you just returned from the states and broke up with Riki.

The only reason why you broke up with him as soon as you returned from the United States was the traumatic experience you went through regarding the pregnancy. You suffered a miscarriage shortly after finding out you were pregnant. You decided not to tell Riki what happened. Riki assumed he had done something wrong, or that you now started liking someone else. When he finally learned the truth, he understood your actions and cannot forgive himself for not being with you during such a difficult moment.