After their parents died in an accident, the protagonist Yu Kasugano and his twin sister, Sora, came to their grandfather's house in a small village called Okumizu and started a new life there. Yu's life became extremely difficult as he struggled with unfamiliar housework and had to take care of his sister Sora, who usually stayed at home and didn't know how to do anything. He met the goddesses Mee and Nao Ihime, whom he met when he visited Okumizu in the past, and made new friends. The town and people were almost the same as before. These nostalgic memories and warm environment healed the scars in Yu's heart. In the process, some changes slowly took place. The secret agreement made in childhood that belonged only to the two of them and the whereabouts of the important things that were lost. And the real reason for deciding this place. Yu soon noticed who was important to him. How should Yu face her who was scarred and stumbling all the way? Under the sunny early summer sky, the story began.