WELCOME TO THE WORLD OF ONE PIECE

It was the wano arc and luffy is using gear 5 to fight kaido while the rest is fighting armies inside the castle

Luffy:GOMU GOMU NO GIGANT!!!

Yamato:NOW LUFFY DO IT!!!!

Luffy:GIGANT PISTOL!!!

luffy hits kaido on the face and kaido starts to feel weak and shaky

Kaido:Urghhhh...

Back at the castle everyone is still fighting