The prestigious Saint Arcadia School has recently begun accepting male students, and Takuro Hayami is among the new arrivals. Thrilled by the chance to share a dormitory with attractive and well-proportioned classmates, he does not realize that the girls at the academy are sexually voracious deviants. Appearing to be an ordinary student at first glance, Takuro immediately becomes the target of aggressive advances. When Yuuki Miyagishi, one of his roommates, manages to seduce him, she uncovers his special ability: exceptional sexual prowess! Hayami's "Ultimate Sex Power" quickly spreads across campus, and what began as playful kinkiness escalates into a fierce competition as every student club attempts to persuade Takuro to join their ranks. Beneath Saint Arcadia's polished reputation lies a desperate sexual power struggle—and the arrival of the new transfer student may just be the tipping point.