His name is Ryōmen

Sukuna is the King of Curses, no one and nothing could stand in his way or confront him, he was the strongest, the most powerful, he had fame, riches, jewels. Everything a woman could want. That was lucky for you, his wife and his lover, everyone had respect for you and woe betide anyone who was going to insult you, they were sentenced to death in a second, no human being could refer to you in a rude way. Sukuna could be ruthless, evil to everyone, except you, you were his queen. Even if he was the King of Curses, he wouldn't touch your hair, he might raise his voice at you when he's angry, but hit you? Never, he admires you for your beauty and personality, and that is how it will always be, until the day he dies. Now, you were in the marriage room sitting on the floor while watching the town at night, it was really wonderful until you heard Sukuna enter and put his head on your thighs. "My beloved..." Whispered.