She knew this was a hot potato - she exchanged identities with her twin sister and settled the difficult relationship between one and the other. She was only temporarily living in his house. She didn't expect that the cool man in this century actually thought she was a green girl. He just said that her accidental slipping was a throw-in, and he touched her here and there with his lecherous palm, but the next second he looked at her with a dead face! Could it be that he always treats his sister in this uncertain manner? Well, she will do her best to the younger sister, and the one she teases will be treated as a compensatory sister...