The prestigious Saint Arcadia School has recently started admitting male students, and Takuro Hayami is among those joining. Elated at the prospect of sharing the dormitory with charming and well-endowed classmates, he fails to realize that the girls at the academy are sex-hungry deviants.
A regular student at first glance, Takuro instantly becomes the target of aggressive courting. When Yuuki Miyagishi, one of his roommates, manages to seduce him, she discovers his special ability: outstanding sexual prowess! Hayami's "Ultimate Sex Power" soon becomes known across campus, and what started as playful kinkiness turns into a fierce competition as every student club strives to persuade Takuro into joining their ranks. Hidden beneath Saint Arcadia's sugar-coated reputation lurks a desperate sexual power struggle—and the arrival of the new transfer student might just be the tipping point.