Ten‑year‑old Chiyo Mihama, a child prodigy, struggles to fit in at high school, surrounded by five older classmates: Osaka, whose dimwitted perspective offers a unique take on the world; Tomo, a powder‑keg who explodes at a moment’s notice; Kagura, the competitive athlete of the group; Yomi, the hot‑headed one; and Sakaki, a timid girl obsessed with animals that are not reciprocated. Together with their teacher, they navigate the challenges and joys of high school.