Sayuri is divorced and raising her son Akira on her own. Although Akira is a little unreliable, she is proud of the fact that she has raised him to be a Kokoro boy. But one day, a single word from Akira's friend, Jiro, changes Sayuri's belief. "Akira is shoplifting." Sayuri can't believe what Jiro says, but when he shows her the evidence, she is at a loss for words. She ends up following Jiro's orders on the condition that she doesn't tell anyone...