Hikaru and Chikage, twins who grew up in an orphanage, are taken into the home of Yukihito-san, a doctor who has been taking care of them. When they nervously open the door to the Ishiki household, what's there is... a garden of beautiful brothers. Their new family has eleven gorgeous brothers who are renowned throughout the neighborhood. Surrounded by a kind and perverted family, what will be the fate of the twins? Each day is a chastity survival game!