User blog comment:B214/Volume 21 info & spoilers/@comment-104.7.80.211-20160411015806/@comment-94.195.158.126-20160411201933

I never thought about the queens staying behind to take over the Satan roles, it's an interesting idea that could probably work. As for Mammon, Beliel and Belphegor I'm assuming they will become new Satans after helping out with events in the next few novels. I'm personally interested in the who mammon is