A hot blonde gal from Tokyo transfers to a school in the countryside! The innocent girls, who are insensitive to fashion and the latest information, are shocked! The gal also goes after the innocent boys in the class and gets hold of their dicks! Inspired by this, the innocent girls put on flashy underwear, stretch themselves, and transform into naughty, cool girls! And they do their best to appeal to the boys! The class is being invaded by the gals day by day, and it is turning into a slutty class where dirty acts are commonplace!