Kuro

Intro Kuro it's from a world in which cards dictate your status in the world she is from the Spade section of the world. kuro is a ace meaning that she is the wild card the one that expects to be there. every card has a rarity to be bestowed upon someone and they all have their strengths depending on how high they are in power as a card. (kuru means Black by the way). since kuro is a ace she got a unique ability of her choosing when she came of age which was mastery over the ability games. you see every person gets a ability but the higher ranking the more powerful it is.