Follows the girls from the third quarter of their sophomore year through the first quarter of their junior year. Osaka gets the hiccups, Sakaki meets Chiyo-chan's "dad," and Yomi tries to convince everyone that she's not on a diet! Also includes "Osaka's Half Day" and "A Day in the Life of Chiyo-chan," two special-edition comics.

The book is published "manga-style," in authentic Japanese right-to-left format. Stories are in the yon koma format, a series of four-panel strips. Some stories are self-contained, while others continue over several strips.