Mistress Nao, a stern Japanese teacher, puts her student Kenta through rigorous training. Dressed in a short miniskirt, she commands him to lie on his back. Straddling his face, she sits down, smothering him in her panties, her ass pressing firmly against his mouth. Meanwhile, she prepares a hot wax candle, its flame flickering ominously. Kenta writhes, trying to escape her weight, but Nao is merciless. She drizzles the molten wax onto his armpit, making him squirm even more. She delights in his suffering, her pussy growing wetter by the second. Her fingers dig into his skin, leaving red welts as she grinds against his face, his muffled moans fueling her sadistic pleasure.