Taidana Akuyaku Kizoku no Ore ni, Kon'yaku Haki Sareta Akuyaku Reijou ga Totsuidara Saikyou no Fuufu ni Narimashita @COMIC

Alban realizes that he had been reincarnated as the “villainous nobleman” of a fantasy novel. Just as he starts rigorously training in sword and sorcery so that he would not be defeated by the hero, Alban finds out that Leticia, the daughter of the villain, is to be his bride! Leticia is a young lady who is the subject of many unsavory rumors! He was scared to see what kind of “bad girl” she would be… But when he meets her, she seems pure and beautiful as an angel, almost like his ideal woman. Alban is so smitten that he forgets all about his plan to avoid the bad ending. He decides to strike back at the mastermind behind his beloved wife's downfall! Using their own villainous reputation to their advantage, he sets a trap to lure out the culprit......? (Source: Corona EX, translated)