By the way, there's another theory. About the identity of the 13th. Based on this clue:
You see, in Naery's signature, there's a userbar with the well-known Alucard, from the equally well-known anime Hellsing. So, this character repeatedly transforms into a dog throughout the anime/manga.
There's no logic here!
A dog sniffed something out, and here, it's also like a dog... - nonsense...
I urge everyone again to execute Ple-Sen before it's too late for his completely illogical theories!