A sister and a brother who have a good relationship meet a brother who seems to have a good relationship but actually has a bad relationship. From the time they met and got to know each other, is it like a brother who loves his sister to the point of being protective? Why do these twins not want to get entangled with each other, but what can they do after they leave? They never really want to separate from each other, they just want someone to recognize them... Is this a luxury? Finally met her...