The fifth installment of the Special Novel x Max-A collaboration project [Erotic Novel Series] is finally here, "My Sister's Cast," based on the novel by Ukami Ayano, winner of the Newcomer's Award at the Japan Erotic Book Awards and the Grand Prize at the 2nd Dan Oniroku Awards! Starring the ever-popular Hikaru Konno. Miyoko (Hikaru Konno) falls down the stairs and hurts her leg, and can barely stand on her own. With her inconvenient cast, she can't even go to the toilet and has to wear diapers. The cousin she's always admired shows her unwashed penis... An exciting, authentic drama!!