My position here is that Black Blades are exclusive to Armament Haki Specialists. However, with how rare it is for somebody to make one, it can easily imply that at a high level of Armament Mastery a specialist can access Conqueror Coating which is primarily a Conqueror Mastery ability and that through a combination of Armament Haki and Conqueror Haki a Black Blade can be forged.
The evidence may suggest otherwise because it is said a Black Blade is forged over countless battles, and I think Armament Specialists primarily infuse it with Armament Haki throughout that time. They may be able to infuse Conqueror Haki into it as well, at high levels of mastery, but the driving force in a Black Blade is the Armament Haki resonance which leaves parts of its energy in the sword each time it is used. It gradually reaches a point where the resonance is high enough to cause it to become altered as a form of superalloy.
Generally, on this website, people believe that Conqueror Coating is the trigger for a Black Blade to be forged. The reasoning that supports this includes such things as a belief that Conqueror Coating will become permanent in the same way as I described Armament Haki permanently altering the blade.
A counterpoint to this is that Armament Haki characteristics include hardness, and Black Blades are unbreakable. That is not a Conqueror Haki characteristic. In fact, a Conqueror characteristic contradicts this because they can't use low grade weapons. They would break them. A characteristic of Conquerors is that they use so much force that they require a Supreme Grade blade to use the full extent of their strength.
From my perspective, both arguments have merit, but there are some indiscrepancies between them. Conqueror's Haki is mysterious still, so it's not impossible that it evolves the blade, but there are many things pointing to Armament Haki too.
The evidence may suggest otherwise because it is said a Black Blade is forged over countless battles, and I think Armament Specialists primarily infuse it with Armament Haki throughout that time. They may be able to infuse Conqueror Haki into it as well, at high levels of mastery, but the driving force in a Black Blade is the Armament Haki resonance which leaves parts of its energy in the sword each time it is used. It gradually reaches a point where the resonance is high enough to cause it to become altered as a form of superalloy.
Generally, on this website, people believe that Conqueror Coating is the trigger for a Black Blade to be forged. The reasoning that supports this includes such things as a belief that Conqueror Coating will become permanent in the same way as I described Armament Haki permanently altering the blade.
A counterpoint to this is that Armament Haki characteristics include hardness, and Black Blades are unbreakable. That is not a Conqueror Haki characteristic. In fact, a Conqueror characteristic contradicts this because they can't use low grade weapons. They would break them. A characteristic of Conquerors is that they use so much force that they require a Supreme Grade blade to use the full extent of their strength.
From my perspective, both arguments have merit, but there are some indiscrepancies between them. Conqueror's Haki is mysterious still, so it's not impossible that it evolves the blade, but there are many things pointing to Armament Haki too.
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