While her husband was working alone in a rural area, Ai was living happily with her young daughter, Yui. One day, she brings Osana's friend Ryota, whom Yui met by chance, to her house. Ai is excited and happy to be reunited with Ryota, who has become an adult, but she realizes that at that moment. Ryota can't contain his excitement when he sees her without a bra...! ``Ryota-kun is looking forward to Yui.