Yumi introduces her fiancé Shigeru and his sister Seiko to her stepfather Tokujyo, with whom she has lived for many years. Tokujyo smiles upon finally hearing about his stepdaughter's wedding plans. Yumi feels relieved seeing this, but she notices that Tokujyo is paying attention to what's under Seiko's skirt. Yumi experiences an indescribable emotion as she witnesses her stepfather becoming aware of a woman for the first time.
