A bit about Eris

The daughter of Ryomen Sukuna, Eris adored her father. She was first a half curse, for Sukuna laid with a human woman who later gave birth to her and left with the monstrous curse. At first Sukuna trained her to be able to fend for herself. But once he learned she was getting stronger, possibly stronger than him, he killed her. But he didn't expect her to be born again as a curse. The Curse of Chaos. Now 1,000 years later, Gojo found her, now it was up to him to teach her the ways of the new world; to defy her father.