Birthday: October 13
Height: 163 cm
Weight: 49 kg
BWH: 81-59-82

Haruka is a schoolmate of Riki's from a different class, but despite this, always seems to find time to hang around in Riki's classroom. She is a problem child and will start an uproar for her own personal enjoyment, which causes the public morals chairman Kanata Futaki, to often chase after her.