Kayo Zenna is a relative of Mayaka's, and Rie's younger sister.
She is a quieter and shyer individual than her sister. Unlike Rie, she doesn't write her name on her items.
Kayo is an elementary schooler with twin-braided brown hair that goes down to her shoulder.
As Rie is always putting her name on her things, Kayo is using Rie's kimono without her Rie's permission because she knew that Rie won't allow her to. Eru and the others thought that Kayo's hanging kimono was a ghost.
She is Kayo's younger sister.
Rie and Kayo are Mayaka's relative.
- She's in the 4th grade.
- She calls Mayaka "Maya-chan".
|Hyouka Featured Characters|
|Main characters||Eru Chitanda • Houtarou Oreki • Satoshi Fukube • Mayaka Ibara|
|Students||Ayako Kouchi • Fuyumi Irisu • Jirou Tanabe • Jun'ya Nakajou • Kaho Juumonji • Koreyuki Tani • Kurako Eba • Masashi Tougaito • Mayu Hongou • Misaki Sawakiguchi • Muneyoshi Kugayama • Shouko Yuasa • Tomohiro Haba • Yasukuni Yoshino|
|Other||Jun Sekitani • Haruna Anjou • Kayo Zenna • Masakiyo Ogi • Omichi • Rie Zenna • Tomoe Oreki • Youko Itoigawa|