Shigeru, a second-year middle school student, decides to move from the city to a small island. Although he feels dissatisfaction and anxiety about life on an island that seems to have no entertainment or anything, he learns about a girl in his class who is much taller than him, and his excitement becomes unstoppable! With just the three of them—Mikuru, who is big-sized, Rin, who has a committee chair personality, and Shigeru, the transfer student—they are the only classmates. The number is small, but every day is thrilling! This is a slow-life comedy that depicts the laid-back and fun school life of these three.