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.