Nene Yoshitaka returned to her hometown after a long time studying in Tokyo. She came back with the purpose of visiting her cousin, whom she had secretly loved for a long time. Witnessing Nene's growth also made her cousin feel shy; she had become a true beauty of the city. Seeing his little sister now incredibly beautiful, he couldn't hold back his feelings and took the opportunity to sneak in while Nene was sleeping in the middle of the night...