At the request of a powerful figure, the inexperienced schoolgirl Misaki was entrusted to Hayami. Though still a pure and gentle girl, Hayami detects her latent sadistic potential and decides to impart his complete BDSM training techniques to her. Through strict discipline using tools such as whips, candles, and enemas, Misaki gradually matures into a woman. Along the way, the deepest secret technique—Ryuu Baku—is revealed, unlocking Misaki's expanding potential.