User blog comment:Traffy731/luffy's red hawk attack/@comment-79.198.224.75-20120924211501

it's said that there is no way (except for Blackbeard) for a person to have powers of 2 devil fruits. I think that Gear 2 produces enough heat for his arm with the armanent haki - which look like steel- to get on fire, when he speeded up his attack