Takuya Enoki's mother passed away in an accident eight weeks ago, and now he has taken on the responsibility of caring for his infant brother, Minoru. Meanwhile, their father works grueling hours as a Japanese "salaryman". In order to provide for his brother's everyday needs, Takuya must put aside his own childhood and leisure time, and take on the adult responsibilities of cooking, sewing, and discipline. Despite the challenges he faces, Takuya continually strives to overcome his growing grief and find love in his heart for the brother who has become both a burden and a blessing.