The Younger Sister Ren which came back from the studying abroad using a long-term holiday. Originally is after a long absence by the brother who the parents' house has only one nursery, and lived a life in the room where is same as, homecoming of the Younger Sister with an opportunity; the life in one room is Marumaru at the beginning Be like opening and be upset about the older brother for positive character reputation, the life in the same room, a wild action of the Younger Sister brightly, and keep on. Be conscious of Younger Sister gradually.
