Online stream anime episodes, Watch Yu-Gi-Oh 5D Episode 15 English Subbed online and free episodes. Anime Episode guide, Chapter Yu-Gi-Oh 5D Episode 15 English Subbed Welcome to the Fortune Cup / (Duel of Fortune Cup Begins: Attack from the Sky! Flying Fortress SKYFIRE) The Fortune Cup has officially begun and the first duel pits Greiger against Leo, who is disguised as his sister Luna, as she did not wish to participate. Greiger’s aircraft machine monsters are giving Leo’s Morphtronic monsters a hard time. Meanwhile, Zigzix, Goodwin’s scientist, puts his latest invention to the test: a device that detects signer activities. But Leo is unaffected while Luna is. Leo loses his duel and Zigzix finds out that Luna was in the stands during the duel.