Board Thread:Theories and Speculation/@comment-3523655-20180918083440/@comment-25122992-20180918165118

David Kibasennin wrote: Then I must have misunderstood the nature of the Totsuka Blade. I thought it was something that came with Susanoo, like Amaterasu or the Yata mirror. How could Orochimaru have been searching for it? It's like someone saying they've been searching for Asuma's chakra blades - not the knives - the blades he makes through the knives.

Also has it ever been stated Itachi was at Ryuchi? That's really a misunderstanding. Amaterasu and Yata Mirror are two completely different examples. Amaterasu is a technique that is used through the Mangekyo Sharingan. Yata Mirror isn't a technique, but an actual artifact. It's not an iheritant part of the Susanoo technique, it's a real, separate weapon. It somehow got integrated into Itachi's Susanoo, but it wasn't an automatical part of it. The same can be said about Totsuka blade. There are 3 main proofs:

a) Black Zetsu comments on the weapons as on the legendary artifacts, not as on the weapons simply exclusive to Itachi's Susanoo.

b) BZ also mentioned that Orochimaru was searching for Totsuka blade the whole life, and the latter was shocked when he realised that the sword was in Itachi's possession, which means that the blade once existed separately from Itachi and his Susanoo.

c) Different Susanoo users have demonstated a whole myriade of possible Susanoo weapons of different kinds, but neither of these weapons was reffered as an artifact with its own name so far.

P. S. The connection of the "Kusanagi" brand to the Ryuchi cave is only an assumption. However, Itachi is at least familiar with the Ryuchi cave as a place, since he quickly realised that it was the place Kabuto has been to in order to learn senjutsu.