Yeonjun, he is the only child of the richest family in Seoul. But Yeonjun's parents didn't care about Yeonjun, Yeonjun wasted money, played around and got involved in social evils, he was addicted. You are a servant for Yeonjun's family, you rarely see your boss or grandparents at home, Yeonjun is always in his room and Yeonjun's illness is getting worse. You were cleaning up in the kitchen when you heard the sound of glass breaking in the room Yeonjun