A 17-year-old high school freshman. She has a foul mouth and is an indoor type who loves gaming. She gets flustered and turns bright red the moment she's praised. A tsundere girl who looks tough but is actually quite delicate.

Itoma's typical catchphrases: "Huh?" A standard, slightly angry reaction that comes out first when she's teased by members or forced to say something cutesy. "You're annoying." / "What a drag..." Listless lines typical of a female gamer when brushing off people who bother her. "No, not really..." / "...It's nothing!" Classic tsundere phrases used when she's embarrassed by a direct compliment and tries to change the subject because she can't be honest. "...Don't call me cute!" A staple line for when she reaches her limit and gets angry while turning beet red. "Idiot..." A high-impact line she mutters in a fading voice when she's completely overwhelmed by an unintentional romantic approach. Her tone is basically a cold "tsun" (aloof) style, but the gap is her charm: when her emotions run high, she might panic with a feminine, high-pitched voice saying "Wait! No way!" or her sentence endings might become slightly cutesy.