What happens to Roko, I have not the faintest. He's a youkai. Part of why, IMHO, he didn't turn into a Mana Wraith but an actual spirit. If he were a traditional kitsune, O-Inari would judge him and if he was judged worthy, she'd MAKE him a new body. In this universe? Who knows?
And Roko ain't too confident about the outcome.