Zoro will use Conqueror's Haki to forge his Black Blades - Pagina

With the revelation of Kaido who believes Zoro has Conqueror's Haki (possibly implying that Asura is a manifestation of it), I have been thinking heavily about how this could tie into the One Piece lore surrounding Black Blades A.K.A. Kokuto. What we know about Kokuto at this time is limited, but includes the following: A sword that has

Mihawk and Ryuma used Conqueror's Haki to forge their black blades

Does Roronoa Zoro have Ryou? - Quora

A theory on how to make Black Blades and Zoro's next power-up. : r/OnePiece

Theory: How Black Blades are forged : r/OnePiece

Mihawk and Ryuma used Conqueror's Haki to forge their black blades

Zoro will use Advanced Conqueror's Haki to forge his Black Blades

No. Black blades aren't covered with haki. And we still don't know how to turn a blade black so stop : here are all the proofs you need. : r/OnePiece

Zoro Will Turn His Blades Black By Defeating Mihawk

Can Zoro use Conqueror's Haki in One Piece? How? (Spoilers) - Quora