Shibaki returns to his hometown to work as a high school teacher, only to find that his niece Haruka is his student. He visits her mother, Yume, and his long buried feelings of love for her reawaken.
Shibaki confesses his love for Yume at school. Her ex-husband Shimpei hits Tsubaki, but then Yume's daughter Haruka and Shibaki's girlfriend Hatsune appear, baffled by what the fight is about.