She married a wealthy husband and gave birth to her long-awaited first son. Yui, who was at the height of her happiness, decided to go home to show her child to her husband's parents. However, what Yui sees there is her mother-in-law, who sets all the rules for the Kawagoe family. Yui's husband obeys her mother-in-law, and Yui feels uncomfortable and is milking her breasts, which are swollen with breast milk, when her father-in-law visits Yui. ``We have no use in this house anymore.'' Yui accepts her father-in-law's breast milk massage because of her loneliness.