The Sealed Dagger: A Ninja Guide

I don't know why I brainfarted and forgot that NIN can also use Blurred Knife +1. Same OAT and Haste, lower delay. It would make better sense if you play multiple jobs that can use the knife to just use that as your "I need haste" weapon, instead of carrying multiple blurred weapons across jobs (1 job weapon vs 8 non-haste jobs' weapon). The knife is also generally cheaper than Kujaku

I wondered that when I read your post, don't know why they bothered with the Katana really unless you needed the acc from it at the time it was launched.

Another upcycle in existing assets.
Was the original something you could augment?

Someone had to explain the Hades earring thing to me because I guess I was on break when those were a thing

I suspect the original was like ebur gear? Which the wiki like the Hades earring does not link to anything that would explain the process

I bought the katana way back because its a cool lockstyle and I just like using Katanas over anything else personally. But from a minimalist perspective (and to answer the guy's question), if you're ever in an unbuffed scenario, the haste proc is all that matters at that point. The dagger works just as fine. I happened to simply forget NIN could use it because I sold mine so long ago from COR. I used it on BST pre-Ridill and Kraken Club, but haven't considered it since that from a long time ago.

The point I was making is you don't ever need to be in a haste-less scenario if you just bring the blurred weapon. It's probably going to be your best offhand in a low-buff scenario anyways with the OAT. Not that I think that scenario is ever going to be super common to begin with (maybe soloing an Omen boss and your trusts die and you can't resummon the haster, even thats rare)