Always keeping a cool Kokoro, Saki trains her students' bodies in a stoic manner through yoga, boxing exercises, competitive swimming, and strength training. Once her heat switch is turned on, she makes the cock twitch and erect with a fierce blowjob, then straddles him and climaxes with sport-like sex, shaking her soft, huge breasts! "You're usually so prickly, but suddenly attacking with your bouncy breasts is unfair, teacher..."