History explains the daily life of the College's freshman, who is just beginning a new life at the Faculty of Literature of the University of Tama. Grown with his sister, he left and lived only when she married and had two daughters from the previous marriage. He tried to distance themselves from the family that was the reason that he moved to live alone. After about 3 years, her sister asked her to visit and take care of the girls, which suddenly changed her life when the parents of girls disappeared. Now he must live with three daughters of his sister; With which two (from the previous marriage) is not bound by blood: Tsundera (14 years old), a small demon (10 years) and a little girl (3 years). In the room in the size of six tatami.