Watch anime online, stream anime episodes for free, you are watching One Piece Episode 439 English version online and free episodes. Anime Episode guide, Chapter One Piece Episode 439 English Subbed Luffy’s Treatment Begins! Ivan-san’s Miraculous Power! Emporio Ivankov displays some of his powers, including stopping a vengeful pirate’s cannon shot merely by winking and then turning him into a woman. Ivankov tells Bon Clay that he saved him because Luffy begged him to, and he is healing Luffy with his hormone-based powers, which only work on those with extraordinary will to live.