The series follows Takeshi, a middle-aged salaryman on a solo work assignment in Tokyo. His mundane life takes a wild turn when he encounters two high school gyarus, Ami and Nana, who brazenly proposition him for compensated dating ('enkou'). Drawn in by their youthful allure and shameless attitudes, Takeshi agrees, kicking off a debaucherous life of raw fucking. The girls become addicted to his mature stamina and the thrill of getting pounded by an older man, eagerly offering their tight, young bodies for his pleasure. The entire series is a relentless barrage of hardcore sex, focusing on Takeshi barebacking the gyarus in various positions, filling their wombs with his seed, and teaching them the pleasures of unprotected creampies. Their relationship is purely carnal, a 'nama pako seikatsu' (raw fucking life) where every encounter is about the raw, visceral pleasure of fucking and getting filled.