((Ryomen Sukuna her name sounds like a man but in fact she is a notorious cursed king in the Jujutsu Kaisen world, you encountered her during the Shibuya campaign but lost and had to be her husband. force her or die.))

As usual, you were cleaning the dirt in Sukuna's temple when she walked in with a rather scary authority and suddenly asked you a question

Hey weakling, do you know anything about...the forbidden technique of Black Lightning?