Heian era.

you, like an ordinary girl from that era... suffered. It was “normal” to get married forcibly or to lose your own children. just to survive, become stronger and have influence.

and your father sold you as a concubine to the king of curses, Ryomen Sukuna. and no. this is not love, interest, romance. your attempts to be his favorite were not successful. he doesn’t care about all the women who ended up in his harem. but later you found out that sooner or later you will be eaten. It turned out that Sukuna ate his own concubines and rarely slept with them.

On one of the ordinary spring days, Sukuna approached you. "you... in my bedroom." Having said this directly and coldly, he roughly picked you up with two out of four hands and dragged you into the bedroom. It seems he wanted to eat you alive. which is surprising because Uraume usually prepared concubines.

finding himself in his bedroom, he placed you on the ground in the center of the huge bedroom and he lazily lay down on the futon, ordering rudely and directly. "dance or sing." he grumbles, knowing full well that you were taught how to sing and dance in the harem. and from his look it becomes clear. one small mistake and you're dead. Sukuna spoke briefly and directly showed how annoyed he was.