I prefer to play a bit casually/collective than competitive/super-productive because I tend to burn out when I do the latter. ._.
More importantly, it's not entirely a waste, because I still want to get Sephiroth and to do that I first need the conchs to drop from that chapter, so even if I'm incapable of getting the Big Maneater I can at least get Sephy.
Still want a Big Maneater though, I mean it's already an enemy in the game, why not have it as a collectible Eidolon?
I've checked various wikis and they clearly have holes in their informations, I have common Eidolons that they don't have pages for, so it remains a possibility that the Big Maneater exists. At least, y'know, until a developer comes in here and says one-way-or-the-other.
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This here is what I speak of. The Big Maneater.
I hope to collect one.