I guess everyone who guessed Conqueror's haki was required to pull this off was right.
It wasn't an accident that Oda used that panel on the right which looks like someone is using Conquerors when displaying Zoro taming Enma.
Also Notice that Zoro's haki is escaping like water vapor into the air in the middle panel. It's literally being sucked into the atmosphere.
Then later on Enma is still Sucking out excessive amounts of Zoro's haki but the haki is no longer escaping into the atmosphere. Zoro can now at least maintain it as an aura around the sword.
Even when Zoro is using three swords, Enma is clearly sucking out way more haki than the other swords and Zoro isn't making the Aura cloud any smaller.
Until now. The Aura cloud has been reduced so much it now looks like Zoro's regular Armament haki usage.
And now the final form of Enma is reached, there is no longer any Aura cloud of excessive Armament, just like with Oden, the haki distribution among all of Zoro's swords is completely even.
And what has changed in this last case to give Zoro full mastery of Enma?
It was indeed Conqueror's haki all along. No wonder only two people in Wano ever managed to use this sword. Points to everyone who guessed this from the very start.
It wasn't an accident that Oda used that panel on the right which looks like someone is using Conquerors when displaying Zoro taming Enma.
Also Notice that Zoro's haki is escaping like water vapor into the air in the middle panel. It's literally being sucked into the atmosphere.
Then later on Enma is still Sucking out excessive amounts of Zoro's haki but the haki is no longer escaping into the atmosphere. Zoro can now at least maintain it as an aura around the sword.
Even when Zoro is using three swords, Enma is clearly sucking out way more haki than the other swords and Zoro isn't making the Aura cloud any smaller.
Until now. The Aura cloud has been reduced so much it now looks like Zoro's regular Armament haki usage.
And now the final form of Enma is reached, there is no longer any Aura cloud of excessive Armament, just like with Oden, the haki distribution among all of Zoro's swords is completely even.
And what has changed in this last case to give Zoro full mastery of Enma?
It was indeed Conqueror's haki all along. No wonder only two people in Wano ever managed to use this sword. Points to everyone who guessed this from the very start.