A hardworking couple striving to achieve their dream of owning a home and having a baby while both working full-time. One day, the wife, Itsuki, injures her leg and collapses, prompting their neighbor, Soichiro, to come to her aid. Soichiro, who once lost his own wife and has been living aimlessly ever since, gradually finds himself drawn to Itsuki. Meanwhile, Itsuki feels unfulfilled in her intimate life with her husband and begins to notice emotional gaps in her marriage. Hesitant at first, she slowly starts to acknowledge these new feelings. The story begins here.