Kono Aozora ni Yakusoku wo

In an isolated island south of the Japanese mainland, a school is located on the top of a hill, from where the town and sea can be seen. On the top of another hill lies girls dormitory, a place where many girls have grown up. One day, a transfer student moves to town. Though sometimes arguing against each other, the students come to enjoy their slices of life on the island, filled with wholesome moments against a calm and beautiful countryside.