Tsukiko Wakahisa (若久 都綺子,Wakahisa Tsukiko?) is an original character created by Jackkel Dragon. She is one of the protagonists of Zero Hope.
Tsukiko has shoulder-length black hair, the front of her hair being longer than at the back, and wears a dark blue hairband. She has dark blue rounded glasses and has bright green eyes.
She wears the same Tendo uniform as Misaki, consisting of a white sailor suit with a bluish-black collar, sleeves and skirt. She wears a purple ribbon under her collar, kept together with a golden clip, and wears the standard school shoes and black calf-high socks. She often likes to wear a plain white hoodie over her uniform.
Tsukiko is considered a weirdo by her classmates, spurred on by rumors that she has her eyes on Ryoto. A loner by nature, Tsukiko spends most of her time playing video games or reading.