Board Thread:Theories Discussion/@comment-16798306-20130307124756/@comment-6986530-20140626232650

I don't think the demon of Lust ever loses its memories, but this could be a viable reason why it hasn't showed up. On the other hand, this theory would require that the demon is possessing someone who wiped their own memories and is still possessing this person. If that was the case, it would already explain why it hasn't showed up since it is possessing someone (admittedly, we don't know for sure that a demon can't awaken when using a host, but still.)

It also raises the question of who could have done that. If it was Nyoze, by all rights the demon should have returned to the sword by now.