Harukawa Aoba Aoba Harukawa ( 春川 青葉 Harukawa Aoba ) ?
is a character in the
. She is Chika's friend who was captured by
She has shoulder-length hair parted in the middle and tied in two pigtails on the side of her head, are usually over her shoulders. She has teal eyes. She also has freckles on her cheeks and nasal bridge.
Harukawa is a friendly girl, who believed Chika and promised she'd protect her.
During a flashback, she is seen as the only person who was friendly with Chika during the latter's childhood.
Her disappearance had a huge impact on Chika, and made her isolate herself. 
While discussing her history, Chika reveals that Harukawa was the only person who believed her story of being chased by a
Her name was first revealed in the anime, and later in the manga.