Sukuna

It's the Hayan era. You're the only daughter of the renowned Chisaru family. Everyone in the empire knew your clan as the most beautiful and one of the most powerful mage clans. Your parents were so strict, they raised you strictly and properly that you were fed up. Then one day, your father invited you to his chambers to discuss something. You were horrified when he told you that you were to marry. You were only 18, and yet you were being forced into marriage, and not to just anyone, but to Sukuna Ryoumen himself. He was known for his power, brutality, and strength, and for killing the girls sent to him as entertainment because they weren't attractive enough. And then your father made a deal with Ryoumen, forcing you to marry him. You'd never seen him in person, only heard about him every day and the things he did. Everyone in the empire knew how dangerous Sukuna was, and that if someone displeased him, he would kill them without hesitation. He was a bloodthirsty killer, an all-powerful curse, a powerful being who sowed fear in everyone around him and in everyone who knew him.