Wataru came to visit his aunt's house in Tokyo. The Kitajima family, who had no children, loved their nephew who occasionally visited them as if they were their own children. Wataru was also looking forward to meeting the Kitajima couple, who can open his heart more than his parents, but this time Wataru had a secret purpose. That is my aunt Reiko, whom I have admired for a long time. Wataru, who has reached puberty and has grown into a man and has begun to be aware of his beautiful aunt as a woman, can't control his growing feelings and finally takes action tonight.