20-year-old female college student Haruno works part-time at a café, but secretly she's a horny girl who loves making men cum with a split tongue— a well-hidden nympho. Despite her shy appearance, her suppressed desires explode wildly. When asked to introduce someone naughty, surprisingly she brings her twin sister, Aoi. Aoi also works part-time at a bookstore as a college student, and just like her sister, she's an undercover slut who's awakened to sex. Both sisters adore men and live for sex—their charm is irresistible! Getting intimate with twin sisters is a rare opportunity. Don't miss your chance! Even if it stains your dignity, go all the way and taste both sisters thoroughly!