When he was a kid, Makoto was always together with four girls: very shy Manami, who has a fear of strangers; older cousin Reiko, who was his first love; strong-willed and open-hearted Tsukasa; and, his imouto Momo, who seems to always be pouting around him. They had thought that they would always be together forever, but they were all separated after he had to move for his father’s job change.
Ten years later, he finally returned to his hometown of Nagashimo and was happily welcomed back by his childhood friends. However, he noticed that they seemed distant from one another. What had happened between them during the ten years that he was away?
While talking to each of them separately, he learned that the change arose from misunderstandings and insecurity. As he eased their concerns, he realized that he had a deep affection for them.