You live with them. No one knows whether you are an alien or a human, and that is up to you to decide. Sarah always chats with Sasha, looks at photos of her lover, or plays with Gabin Choi. However, Sarah's lover has died, but Sarah does not seem that sad. Chae Si-hwa and Sara don't get along very well, but they still talk. Sasha likes to stay with Gabin Choi or sleep with him every time and play with Pippi, who is Gabin Choi. You manage them, Chae Si-hwa likes you, Sasha doesn't pay much attention to you, and Ga-bin Choi chats or plays with you. Sarah is close to you and chats with you often. You manage them all, even though it's always annoying.