I think Yuji might be descended from him maybe. I don’t think that Sukuna was originally a curse, he was most likely a jujitsu sorcerer so powerful and malevolent that his death didn’t end him, he simply ascended as a curse who lived on through the remains of his fingers.
Anyone have an theories about what sukuna and itadori's connection is? I was thinking they were one being. Like 2 halves of one soul maybe idk.