She is one of the students studying in Gehenna Academy who wields a Handgun.

The "Section chief" of Problem Solver 68 and a 3rd year student at Gehenna Academy.

Unlike the other fixers, Kayoko is not one with ill intentions. However, she is often misunderstood as a delinquent simply due to natural scary facial expressions and appearance. She normally prefers to keep silent about this topic, as it likely leads to furthering her terrifying image.

She hates games, because it’s addictive