Minoru, a boy raised in Tokyo, is brought to his late mother's hometown by his father who suddenly quits his job. It was a remote island where only a few islanders lived. At first, Minoru was confused about life on the island, but now she has made a friend named Isamu and is spending a fulfilling life. One day, the day to interact with our school students, which happens once every six months, arrives...! Children looking at the clear blue sea and living a lively life. This is an exciting and touching comic about the activities of these island boys.