Height; 163 cm
Weight; 49 kg. 
Sizes; B-81, W-59, H-82

Haruka is a pale-skinned girl with magenta hair that is tied in two ponytails with two clips in her hair at her forehead, and dark blue eyes.

She is a problem child and will start an uproar for her own personal enjoyment, which causes Kanata Futaki (the public morals chairman) to often chase after her. She use marbles as a weapon to distract the public morals committee from chasing her.