Beautiful wife Akari Hoshino, now in her second year of marriage to Yasuhiro, was preparing for their wedding ceremony when tragedy struck—her father-in-law died in an accident. As a result, she ends up living together with her husband and his mother, Yuli Shirai. Originally planning to move in a month earlier, tensions arise immediately as Akari struggles to get along with her mother-in-law. One evening, she accidentally sees her husband and his mother bathing together. In that moment, Yuli murmurs, "I want to see my grandchild soon," a comment that deeply shocks Akari. That single sentence becomes a turning point, sending the story into unexpected and intense territory.