Hina Sorazaki is the disciplinary committee chair at Gehenna Academy. Renowned as the strongest student in the school, she deeply respects her teacher.
However, one day, unfounded dark rumors designed to frame her begin to spread throughout the school. They corrode the minds of the students like a hypnotism, putting the teacher in a precarious position. Hina tracks down the mastermind behind the rumors, a man with dark skin. He demands her body as a condition for stopping the rumors.
"For the sake of my teacher..."
She decides to accept his humiliating demands. At first, Hina endures the man's abuse with a strong will to protect her teacher. However, with each passing day, his training escalates.
One night, she is blindfolded and dressed in a revealing bikini, nearly naked, and taken out to a park at night. As the cold night breeze caresses her skin, the man leads her on a leash and walks her around like a pet, humiliating her. However, the immoral situation and the man's relentless caresses awaken an unknown heat that had been sleeping inside her body.
"No... like this..."
Even as she sheds tears of humiliation, her body responds honestly and begins to heat up. Caught between shame and pleasure, Hina's strong will slowly melts.