Kaoru Misato is a sophomore who tries to use his knowledge of bacteria to earn easy money, who becomes friends with Sawaki. He speaks in the Kansai dialect. He shares a run-down, dirty dorm room with his best friend, Kawahama. Misato is shown to have feelings for Haruka in the manga. He is voiced by Katsuyuki Konishi in the anime and played by Nishida Koji in the live action drama.