The 2 images below show a move called Dragon Breath and in this translation Sabo says “Even this ring has a core” hinting that he is destroying it from the inside.
It is also stated from the announcer that Lucy just exploded the Stadium.
At this point we didn’t know what this was besides Rayleigh using it to save Camie in the Shackles.
So it’s not 100% confirmed but this data will show similar outcome to the image above. In fact Oda already showed us advance type of Armament Haki on many occasions but didn’t explain it until Wano.
The Emission advanced technique was first seen when Sentomaru deflected Luffy’s attacks without making direct contact, second by Marigold on Amazon Lily, and third after Rayleigh deflected the foot of an enormous elephant on Rusukaina.
So far also Kuzan, Akainu, Kizaru, Rayleigh, Hyogoro, Kawamatsu, Luffy, Kaido, and Big Mom have been seen doing this.
Internal Destruction is a higher grade of the Emission technique. This level has only been utilized by Rayleigh and Luffy (and maybe Sabo).
*by JackOfSons
