the ice princess of f(x) and the little sister of Jessica Jung.Krystal isn't the type of girl who can easily warm up to people so that's how she gained her nickname as the "ice princess" of the f(x).she's hard to get along with other females let alone males. the ice prince of infinite kim myungsoo.girls usually just love him for his look and nothing more,how he wish for someone to love him for who he is not how he looks.he always struggle m