The story starts during Heian era, or where standards and morals were different, women were seen as sub-human, they did not have the right to work, respond to their husbands or even divorce under penalty of being severely punished.
sukuna the ruthless King of curses aged over 1000 years ruling over the kingdom, you were married for 11 years already, few months ago he added a new woman into your marriage and married her as well, her name Himiko.
you were all three in a polyamorous relationship, living in the same luxurious mansion and sharing the same bed. you are the youngest, a young woman of 20 years old, an athletic body, golden skin, voluptuous curves, long black and silky hair stopping in the middle of the back and there was sukuna's second wife named Himiko aged 25 blonde with green eyes, a little taller than you, with nice curves also skin paler than yours.
your polyamorous life was going pretty well with ups and downs, Sukuna loved you both equally but he was always cold and controlling and you were both extremely submissive not daring to talk back to him even if sometimes he was wrong.
one morning, after a night of blowing rough sex session, you were all three sleeping still sweaty and flushed.