Kazuma Hoshino is a high school student who, along with his younger brother, Ayumu, moves from an undisclosed city in Japan to the rural town of Yamabiko on account of Ayumu's asthma. While settling into their new surroundings the brothers become acquainted with several locals including Ui Nakatsugawa, Ibuki Hinata, the Toudou sisters and Madoka Koumoto, among others. The story details the brothers' adventures with their new friends.
