The Roaring Burn Bazooka!! Pirate Luffy vs. War Demon Wyper! - S6.E171

Luffy fights Wyper, but after some time, he falls into some underground ruins. Meanwhile, Enel appears on the Going Merry and after telling that his true goal was the City of Gold, he takes out both Usopp and Sanji; then he vanishes and leaves Satori's brothers: Hotori and Kotori to avenge him.