Itoko is a young girl with straight, shoulder-length brown hair that is half tied up and asymmetrical bangs. She has large pink eyes.
She is normally seen wearing a school uniform of some sort, though she has been shown in casual clothing.
Itoko is a cheerful young girl who isn't afraid to speak her mind.
- Her given name Itoko means "string", "cord" (絃)(ito) and "child" (子)(ko).
- Her surname Kuroba means "black" (黒)(kuro) and "feather", "wing" (羽)(ba).
- The Japanese word for "cousin", いとこ is also pronounced itoko, but is clearly written with different characters. Therefore, her name is a pun, and serves as the source of confusion during Yuni and Kimichika's talk during the first night of training camp in Episode 4.