I was thinking about Tenguyama Hitetsu’s comment that Zoro might be capable of making Enma a black blade.
![](https://www.opfanpage.com/wp-content/uploads/2020/07/one-piece-12881347-3.jpg)
Zoro can already extend his Haki in battle so his swords are protected. But they don’t stay black. Something needs to occur to make them black. I think that something is Conqueror’s Haki.
![](https://www.opfanpage.com/wp-content/uploads/2020/07/maxresdefault-7-758x386-1.jpg)
Several times I have seen Zoro display what I have interpreted as Conqueror’s Haki. He gets a really serious look on his face, his pupils dilate surrounded by a small gray circle (which Oda does a close up of), and he just glares at someone. That person immediately backs off… usually saying something about the look in his eyes. I don’t think this is merely intimidation. I think this is his Conqueror’s Haki and it just hasn’t fully awakened yet. I think for a Swordsman to make a black blade, he has to extend his will against the swords to be worthy, so to speak.
![](https://www.opfanpage.com/wp-content/uploads/2020/07/one-piece-12017419.jpg)
We have already seen Zoro assert his will over his swords with both the Sandai Kitetsu and Enma.
![](https://www.opfanpage.com/wp-content/uploads/2020/07/Zoro_vs_Kitetsu_curse.png)
I think he needs to use Conqueror’s Haki though to truly command them. Once he does this, he can make both Enma and Wado Ichimonji black blades.
*Theory by Dark_Sidhe