What is luffy and ace handshake?

Luffy and Ace are characters from the popular manga and anime series One Piece. They are brothers, and their bond is very strong despite their different personalities. In the anime, Luffy and Ace's handshake is called "The Fire Fist and the Gum-Gum," which represents their respective abilities. The handshake involves Ace's hand emitting fire, while Luffy stretches his arm to form his signature "Gum-Gum" fist. This handshake became an iconic moment in the series and is often referenced by fans.