User blog comment:Twilight Despair 5/Hell Trial Theories/@comment-5619706-20130330041257/@comment-3481504-20130402224331

By now, Bela would already be a demon. You're right, it's not thoroughly impossible to get into the cage, but, as it stands, it's impossible for all beings, but God and Death, to access every canal of the cage. And, yes, the Seraphim can, apparently, go into to parts of it.