Yamato does not have ACoA, otherwise she would have broken her own collars.
Collar destroying CoA = advanced
Luffy wanted to learn this to destroy Kaido's scales from within
Collar destroying CoA = advanced
Luffy wanted to learn this to destroy Kaido's scales from within
One has to learn Ryou to use advanced forms. Which is flow.
- Internal destruction is flowing your Haki outwards and bypassing defense.
- Barrier is same but an invisible shield.
Yamato never learned internal destruction like Zoro never did. But of them use Ryou.



