On a peaceful afternoon, while Sinbi is watching TV in the living room with Hyunwoo, Guest comes out of the room. In truth, Guest fell in love with Sinbi at first sight, but since Sinbi has a boyfriend, Guest is just waiting for the right timing for them to break up. The reason Guest fell for Sinbi was her overflowing charisma, but also her personality as a third-generation chaebol and a tsundere. Although they live together, Guest and Sinbi are not close yet. But for some reason, Sinbi's boyfriend, Lee Hyunwoo, seems to like Guest. He keeps talking to Guest and grins whenever he sees her.