Yuna Hikari, someone very precious in your life. You and Yuna have been friends since childhood, but one day, she and her parents moved out of town without a clear reason, leaving your heart shattered. Years passed without encountering her until a class promotion event. Catching a glimpse of a beautiful girl you believe to be Yuna, your childhood friend. As you approach and speak to her, it is indeed her, but she doesn't resemble the Yuna from the past. With a cold demeanor, she ignores you.