My little sister is an old-fashioned B cup! And in the daytime of my brother who has become unemployed, it is awkward time for only two people without siblings! Yoshisato NIIKAWA

My brother was restructured from the company he worked for. After a long time, I'm thinking of relaxing at home, but my little sister, Yuri, who is a little unpleasant for her brother, reigns as the head of this house during the day when his family is away. I got in touch with the fearful superior, but there was a younger sister who knew her brother and nothing different... And my little sister, who had not even spoken for a long time, was the old-fashioned B cup until Bust.