Itsuki Isozaki

Itsuki Isozaki serves as the biology teacher at the high school attended by Shotaro Tatewaki. Renowned for his striking good looks, he carries a reputation for being self-absorbed and blunt. Beneath his seemingly self-centered and carefree demeanor, however, lies a genuine sense of responsibility toward his students. Whenever they find themselves in trouble or entangled in mysterious incidents, Isozaki steps up, leveraging his expertise in biology and the natural world to provide crucial support—making him an indispensable ally throughout the story.