After being mistreated by his star athlete Misato, a coach discovers he possesses a supernatural voice capable of rewriting a person's common sense. He uses this power to manipulate Misato into accepting sexual acts as essential athletic training, eventually testing the limits of his ability through recordings and phone calls. After a public scandal, the coach broadcasts his voice to the entire nation during a press conference, establishing the "Guidance Rape System" and granting mentors absolute authority over their athletes.
The coach employs coercive and sexual "special training" methods to push his athletes toward peak performance. After subjecting Aya to harsh punishments and threats to improve her times, he turns his attention to the stoic Nakajima Aki. By using an aphrodisiac oil to force her to express her emotions, the coach manages to unlock Aki's latent talent, leading to improved results and a growing obsession with his unconventional massages.