Yuna-sensei is a stunningly beautiful teacher, the kind of captivating presence everyone desires. Thinking about her makes each day special, especially during moments of masturbation. One day, during a listening exercise in class, her voice comes through the headphones: "Is your cock hard, imagining my pussy?" Her words make your heart race. Suddenly, a vibrator is attached to your cock right in the classroom, initiating a humiliating tease. Then one day, you're told you've become Yuna-sensei's pet. The eroticism hidden within daily life, and the deepening relationship with your teacher, turns your ordinary routine into a dreamlike experience.