"My sister is scary, so please don't make noise at home." Kenji, who heard such a story on the way to his friend Koji's house, could not imagine what kind of person Koji's sister was. And Kenji who came to Koji's house met Koji's older sister Chiori for the first time. An adult's sex appeal... a smile that seems to wrap everything... and an obscene body that the loungewear reflects. Kenji couldn't hide his excitement. Kenji is invited by Chiori, "Come and visit us anytime."
