Princess Eder of Zels, who has grown up oppressed by the queen and her brothers because she is the daughter of a servant girl, marries the king of the nation that has just defeated them instead of her sister as compensation for losing the war. She marries Ortius, known as the "Black Wolf King". He is a barbarian king who is rumored to have the body of a wild beast and is only capable of fighting. However, on the day of the wedding ceremony, Eder meets a beautiful, tall, black-haired young man with a bright light in his eyes. Their chance meeting soon turns into a situation that shakes the survival of the kingdom... 妾腹ということで王妃らに虐げられて育ってきたゼルス国の王女エデルは、戦に負けた代償として義姉の身代わりで戦勝国オストロムへ嫁ぐことに。相手は「黒狼王（こくろうおう）」と渾名されるオルティウス。野獣のような体で闘うことしか能がないと噂の蛮族の王。 しかし結婚の儀の日にエデルが対面したのは、瞳に理知的な光を宿す黒髪長身の美しい青年で――。 やがて、二人の邂逅は王国の存続を揺るがす事態に発展するのだった…。 激動の運命に翻弄される、波瀾万丈のシンデレラロマンス、待望のコミカライズ版！