A main character from [[Non Non Biyori]]. Voiced by [[Sakura Ayane]].

She has [[blue eyes]], and [[brown hair|brown]]/[[orange hair]] with a [[short ponytail]]. She also wears the [[Asahigaoka school uniform]] when attending school. She's taller than her very short older sister [[Koshigaya Komari]], but shorter than the younger but overdeveloped [[Ichijou Hotaru]]. 

She is a bad student and a troublemaker compared to her more straight-laced sister. She's more emotionally mature than the easily upset Komari, but is childishly irresponsible and often acts lazy. She often pesters her older sister and sometimes treats her like a child; however, deep down she still respects her older sister.

Like [[Miyauchi Renge]], she sometimes calls Komari "Koma-chan"; however, this is generally intended as pestering. Normally she simply calls Komari "onee-chan".

In season one it's revealed that she used to have a childhood crush on her older brother [[Koshigaya Suguru]].
越谷夏海