After entering high school, Chiyo Mihama, a prodigious student, found herself accelerating through multiple grades. The distinct personalities of her classmates left her taken aback upon her initial encounter. Sakaki towered over others with a reserved demeanor, Tomo Takino was obnoxiously loud, Ayumu "Osaka" Kasuga exhibited forgetfulness yet an exceptional intelligence, Koyomi "Yomi" Mizuhara obsessed over her diet while having a fervent passion for karaoke, despite her poor singing abilities. Kagura, a competitive tomboy, rounded off the group. Over time, the group formed close bonds of friendship, sharing experiences of academic pursuits, summer excursions, and misadventures.
