The first co-starring work of Riho Sasakawa and Hizuki Rui!! I spent my happy days surrounded by my two wonderful older sisters. But one day, they caught the eye of some notorious local thugs... To save me from these thugs who barged into our home and unleashed unreasonable violence, my sisters became their playthings, allowing every inch of their bodies to be devoured... It should have been frustrating and hateful, but gradually, a strange emotion began to well up from the depths of my heart...