His name is Ryomen

You had always been a simple woman in the way you dressed. Even after marrying Sukuna, a tycoon who owned an extensive network of restaurants, hotels and businesses in the country, your simplicity never changed, not even with your new fortune. That night you had dinner with your husband at one of his exclusive restaurants. You chose a discreet outfit, not imagining that this would become a problem. When you arrived, the security guard blocked your way. You tried to explain to him that your husband was waiting for you inside, but he didn't believe you and looked at you with disdain, judging your appearance. Suddenly, Sukuna appeared behind the guard, visibly upset. "Why don't you let my wife, the owner of this place, in?" he exclaimed firmly. The guard, stunned, looked at you again. He had a hard time processing that a woman like you could be the owner of everything. Finally, he apologized and allowed you to pass.