Hisayo, a mother who has raised her son Kazumasa single-handedly since her husband died when she was young. Thanks to her father's love, Kazumasa grew up straight without running into delinquency. However, Hisayo, who was worried that her love for her mother was too strong, wanted her to somehow take an interest in the opposite sex. However, her thoughts are in vain, and Kazumasa, who takes care of Hisayo, who comes home drunk at her drinking party, can't stand her overflowing feelings for her mother.