辺境の地を治めるクロ・ハートフィールド。彼の正体は、別の世界から転生してきた25歳の普通の男性。高貴な人間の恨みを買い、左遷のようにこの辺境に領主としてやってきたが、ここの生活が結構気に入っており不満はない。そんなある日、彼に強制的に縁談が持ち込まれる。お相手はヴァイオレット・バレンタイン嬢。公爵家のれっきとしたお嬢様だが、彼女の正体は実はとある恋愛ゲームでヒロインのとほとんどのルートで対立するいわゆる悪役令嬢だった。この世界に居場所を作るべく、はみ出し者同士のちょっと不思議な結婚生活が今スタート!
Kuro Heartfield who governs the frontier land. His true identity is a normal 25-year-old man who has been reincarnated from another world. He bought the resentment of a noble person and came to this frontier as a feudal lord like a relegation, but he likes the life here and has no complaints. One day, a marriage proposal is forcibly brought to him. His partner is Miss Violet Valentine. She is a noble daughter of a duke, but her true identity is a so-called villainous daughter who is in conflict with the heroine in a certain love game. In order to make a place in this world, a strange married life between misfits starts now!