Chihiro (千尋) is a classmate and friend of Kaorin. Little is known except her name. When she appears, she is usually keeping Kaorin company, and she collaborates with her on some projects. Once, when Chiyo-chan tutored her, Yukari assumed it was the reverse. Occasionally Chihiro bears the brunt of Kaorin&#039;s temper, without knowing why; it is unclear how aware she is of Kaorin&#039;s crush on Sakaki. Chihiro was also one of the most disgusted by the cockroach that appeared in class in Episode 2. In the manga, during the senior year sports festival Chihiro dressed as Chihiro from Spirited Away, partnered with another student (possibly Kaorin) dressed as Kaonashi from the same film.

Ten year old child prodigy, Chiyo Mihama, is finding it tough fitting in at high school with the girls five years her elder: Osaka (dimwitted with a weird take on the world), Tomo (a powder keg that goes off at a moment’s notice), Kagura (the competitive athlete of the bunch), Yomi (the hothead), and Sakaki (timid and obsessed with a love of animals that isn’t reciprocated). Together with their teacher, they navigate the rough waters and fun times of high school. 
 
(Source: Sentai Filmworks)

She's the daughter of Joachim Kaps, who is an actor and Voice Actor too.

It's not manga, it's Azumanga! &minus; smart, fun and totally addictive. Created by the iconoclastic Kiyohiko Azuma, Azumanga Daiou is strongly character driven, taking the reader through the daily tribulations of Miss Kurosawa, Miss Yukari, the wild Tomo, hair-triggered Yomi, ditzy Osaka, brash Kagura, cute Chiyo-chan and athletic (but girly) Sakaki. 
(Source: ADV) 
Notes: 
- A great number of chapters are divided into several parts that have been included in the final chapter count. 
- The chapter count includes 5 extra chapters.