A hot blonde gal from Tokyo has transferred to a super rural school! The naive girls who are insensitive to fashion and the latest information are shocked! Furthermore, the gal goes hard on the naive boy in the class and takes control of his cock! Inspired by this, the innocent girls put on flashy underwear and stretch out, transforming into naughty cool girls! And do your best to appeal to boys erotically! The class, which is being invaded by gals day by day, has turned into a slut class where naughty acts are commonplace!