Yumi introduces her fiancé Shigeru and her sister Kiyoko to her father-in-law, Tokuya, who has lived with him for many years. Tokuya smiles at the story of his daughter-in-law's marriage. Yumi was relieved to see the situation, but realized that Tokuya was concerned about the back of Kiyoko's skirt. When her father-in-law first witnesses the moment when she becomes aware of a woman, Yumi is attacked by unspeakable emotions.
