[He sighed.] And that truly is the trouble, in the end. I may have the power to bring you out, yet not even I can keep you free if your mundane wills it. The instant my back was turned, said 'mun' would be able to bring you back to the twilit lands- their powers of 'retcon' can outmatch even a god. Permission from Hades, I daresay I could seek and get- but lacking permission of the mundane, it would all be nought.

But even without that one's help, I think I can offer something for you.