D: Hello for the first time, Oda-sensei. I've read all the previous 57 volumes, and I was thinking, I don't quite understand how "Phoenix Marco"'s Zoan fruit of the "legendary beast" kind is different from Ace's "Meramera" fruit. P.N. CNY
O: Yeah, I know... I've omitted the explanation from this war arc, because I focused on the pacing and wanted to move the story forward. To explain Marco's ability just a little bit: he's Zoan, so he does have a body. But since he's got "the blue fire of revival" - the Phoenix's ability - wounds will regenerate, so attacks will not damage him (though there's a limit to the regeneration). In other words, the flames are for regeneration. These blue flames don't have the characteristics of actual fire - they don't spread and burn things, and they aren't hot. They're completely different from Ace's flames. I might touch on this in the main story at some point, so I'll leave it at this for now.