Haneoka Girls' High School

is the school of Roselia member Ako, RAISE A SUILEN member Rokka, Kasumi's younger sister Asuka, MyGO!!!!! members Tomori and Anon, the members of Afterglow and many members of other bands.

It has both a high school and a middle school branch.

Uniforms
The standard and winter version of the Haneoka Girls' High uniform consists of a blazer, white long sleeved shirt, matching striped tie and pleated skirt, black socks and brown loafers. The blazer has two different colors: gray for high school, and black for middle school.

The tie and skirt colors change depending on what year that student is in: First-years have green, second-years have blue, third-years have brown, and third-year middle school have magenta.

Class 1-A

 * Takamatsu Tomori
 * Chihaya Anon

Class 2-A

 * Udagawa Ako
 * Asahi Rokka
 * Toyama Asuka

Class 3-A

 * Mitake Ran
 * Aoba Moca
 * Uehara Himari
 * Udagawa Tomoe
 * Hazawa Tsugumi

Alumnae

 * Imai Lisa
 * Minato Yukina
 * Yamato Maya
 * Hikawa Hina
 * Seta Kaoru