Nanami lives with her mother and lives as a married couple at her parents' home. Recently, she has been at odds with her husband, who does not care about her family due to his work. Keiko, her older sister, returns home to visit her with her husband, Toru. After dinner, Nanami is unexpectedly alone with Toru and ends up complaining about her husband, but Toru is also worried about her cold relationship... We grow closer by sharing common concerns