Kazuyoshi Usui

Kazuyoshi Usui serves as the secretary and strategist for the Sket Dan at Kaimei High School. He communicates through a computer-based voice synthesizer, often utilizing high-pitched synthetic tones for comedic timing. This reliance on speech software, paired with his deadpan personality, makes his actual emotions difficult to discern. A dedicated science enthusiast and anime fan, Usui frequently engages in intense debates, particularly with Reiko Yuuki, whose obsession with the occult provides a constant point of friction between them.