Hazuki comes to Japan unannounced to live with Kouhei and his grandfather in the grandfather’s antique store. She is fixated on her mother’s promise to meet her again in Japan. Kouhei, remembering that his own mother had abandoned him, ridicules Hazuki’s mother’s promise and says it didn’t mean anything. Hazuki is deeply offended, and storms out into the night. Kouhei eventually cools down and goes to look for her....