Inside the academy, there are some stairs where you can safely peep at girls' panties. What was just another typical day of panty gazing for Yu changed radically when Emu, a cute girl that doesn't stand out much, passed by. What Yuu found under her skirt was a girl going commando! Moreover, she even had a vibrator inside! The girl who seemed so quiet and shy was a masochist pervert who enjoyed coming to school commando with vibrators! Yu had finally found a girl who could stir up his deepest passions! A fated meeting between a pair of perverts! The dangerous training days inside the academy to satisfy Emu's desires and Yuu's curiosity have started!