In the
Haki page, Armament haki has Regeneration Negation. Iirc, the reasoning was due to Marco not healing from getting hit by Garp.
This could very easily be explained as simple Devil Fruit Ability negation.
Haki having Regeneration Negation can be so easily debunked by literally anybody healing from getting hit by Haki imbued attacks, such as Luffy
healing his tooth after fighting Sanji, who would need to use haki to harm Luffy.
I don't understand the mental gymnastic you would have to use to even come to that conclusion (Marco not healing due to Haki regen negation), when Haki was literally introduced in the series to negate Devil Fruit Abilites,
Aight, time for a lecture. For clarification: Robin explicitly states that Busoshoku Haki only allows you to touch/harm the true body of a Logia's user, but doesn't prevent them from using their abilities (Make sure to remember that). Although, you can protect yourself from most elemental abilities such as
Fire. Depending on your Haki let's say Busoshoku Haki level 2 --
Hardening; you can resist the effects of a Devil fruit's user (depending on whose Haki's stronger)
only if you are actively enabling Busoshoku haki to coat yourself with it. Haki wasn't solely introduced to negate "Devil fruits", it allows you to touch the nigh-invincible Logia users and enhancing both your offensive and defensive capabilities, meaning, if Haki doesn't negate regen someone like Marco would still be able to regen. Since we've established before
Haki user A can't negate the effects of a Devil fruit's user such as Self-healing, transmutation, Body-control (T
ouching = / = Negating), etc nor prevent them from using their abilities, in other words Marco still couldn't heal from the punch he received from Garp, despite the fact his blue flames are capable of healing other people, including
his true body, unlike a logia, Marco regens stems from his true body.
Most people most likely doesn't know how Marco's regen works, i'll just copypaste the explanation from the OP Wiki: "Marco can freely create his Blue Flames of Resurrection" from any part of his body, even without actually transforming, and they always cover him while transformed. Th
ese phoenix flames are stronger than normal fire and possess tremendous healing properties; while shrouded in the flames, Marco can rapidly self-regenerate from nigh any physical damage he receives, like a phoenix being reborn. It is noted, or at least implied, that no matter what injury he is dealt, he can recover by flame (even injures that he suffered while his powers are
nullified). Such immense power of recovery allows Marco to ward off extremely potent attacks with little issue, like Kizaru's volley of light bullets or even Akainu's
magma punch.
Marco can also share his healing flames with others, allowing him to mend them as well, even multiple individuals at once. However, his flames are less effective on anyone other than himself."
That’s how I could explain it for now
