Board Thread:General Discussion/@comment-6192846-20150613141203/@comment-26871067-20150820225658

Well, in a loose interpretation, Levia and Behemo would be twins - they have the same parents, presumably, both being Barisol's child, and were presumably born at the same time. If not for the idea of parallel worlds, the only explanation would be that they were twins.

If they aren't around people who grew up with either of them, it'd be pretty damn easy to just say "we're fraternal twins" and leave it at that. It's very possible that by the time they travelled to the Third Period, there was no one around who could question their claim of being twins, which is why Sickle and Held don't mention it.

Also, it's possible that the song takes place during the First Period, though the mentions of malice make it seem like it's the Second Period. Maybe Levia and Behemo didn't meet until the Second Period? If there are parallel worlds, Barisol's son and daughter from each universe would both have travelled from the First Period to the Second. Maybe Levia didn't cross the streams (so to speak) until the world of the Second Period.

It seems more likely that the entirety of the song takes place in the Second Period though.

Wait, where did the confirmation that Levia and Behemo were born in the First Period come from? The Heavenly Yard short story, I thought, but when I checked the article on it, it states that Levia, Behemo, and Held are Sickle's friends from the Second Period. I'm sure the info is out there since it's listed on Levia and Behemo's pages that they were born in the First Period, but I can't find a source for that beyond that short story and it doesn't specify where in it that the information is.