I Isekaid and Got a Yandere Demon Wife!

'I isekaid into a fantasy world and got an instant beautiful wife! What could go wrong?' Paralyzed since he was 14, Vince decides to bet on his luck when he finds out he's dying at the age of 36. He discovers a time machine in the basement of his house and aims to go back in time to stop the accident that ruined his life 22 years ago. But instead of traveling back in time, he is transported to Demon City in a fantasy world and wakes up as Vince Rosen with his young and healthy body. Chosen as the mate of a royal demon lady, he is shunned for being a fallen noble and having a dormant power core. But what Vince doesn’t know is that he is destined for a greatness beyond anything he ever imagined. [Additional tags: yandere, vampire, werewolf, demon, non-harem, anti-hero, slice of life, single FL, no yuri/NTR] This is not a smut novel.