After marrying OL Sumire and starting a dual-income household life for two years... Tarou had some dissatisfaction with Sumire not doing housework properly. One day, Sumire ended up being hospitalized due to gastroenteritis. During this time, Sumire's mother, Kanae, started coming to Tarou's house to help with the chores… Seeing Kanae's 'domestic' figure after so long made it all too real for Tarou. And within Tarou, feelings towards Kanae began to stir, surpassing those of a mother-in-law…
