At the age of six, Shota was placed by his father, Akira, in the care of a mother and her child. He begins to live with Yui, who is close to his age, and her mother, Ryoko. Time goes by, and Shota and Yui become high school students. Since then, Matsuta's parents have never visited them. Yui and Matsuta are attracted to each other, but a phone call from Matsuta's real mother, Nana, makes his feelings unreachable, and Matsuta leaves home... A story of a boy abandoned by his parents and a girl waiting for such a boy. A story of a boy abandoned by his parents and a girl waiting for him, and the kind strangers around them.