Kitahara and her son decided to take a long vacation to return to their hometown for the first time in a while. While looking forward to the small trip with her son, Natsumi felt a deep sense of nostalgia as the unchanged scenery stirred emotions that tightened her chest. Her younger sister Reiko, whom she hadn't seen in ages, greeted her with her usual bright smile, helping to ease the fatigue of the long journey. Reiko, too, seemed visibly relieved to see Natsumi again after so long. After exchanging greetings, the sisters quickly moved indoors, playfully acting just like they did when they were young.