Board Thread:General Discussion/@comment-6192846-20150613141203/@comment-26871067-20150820232208

Actually, did the Second Period have beings that weren't from (or descendants of) the First Period? We know that the gods in the Third Period created humankind, but there's no indication I've ever seen that they'd previously done so in the Second Period.

If the Second Period was inhabited solely by beings that originated in the First Period, would Levia and Behemo be considered First Period beings even if they were born in the Second Period? Since from that excerpt of the bonus story, it seems like "beings of the First Period" is referring to species.

That's more grasping at straws than anything, but there has to be some explanation - either there's a time skip that glosses over what we know to be a major event, or there's been a retcon.

I guess possibly a retcon wouldn't be out of place given the surfacing evidence that Irina is the singer of Full Moon Laboratory despite not being a Rin character, but that hasn't been definitively confirmed as far as I know.