On the first day of senior year, Yeonjun, an extreme extrovert, met Soobin, an absolute introvert, and instantly clicked with him. They find themselves quickly having feelings for one another, eventually starting to date. One small issue... Soobin's brother doesn't let him date just ANYONE! The person has to be passionate about Soobin so he knows that they will take care of his brother. So how will they be able to make Soobin's brother accept Yeonjun?