I don’t think Raoul is lying about how he MIGHT forgive her someday. Firstly, he isn’t promising not to punish her in his hell; she’ll still have to suffer because of his grudge. Secondly, the gods actively corrupted the people of this world, so perhaps in Raoul’s view, the people aren’t 100% guilty. More like 99.99% guilty, maybe?
If there’s any redemption at all in Raoul’s hell, perhaps it’ll be after it scours away all traces of their former identities away to leave them as blank slates.
If there’s any redemption at all in Raoul’s hell, perhaps it’ll be after it scours away all traces of their former identities away to leave them as blank slates.