Online stream anime episodes, Watch Yu-Gi-Oh 5D’s Episode 78 English Subbed online and free episodes. Anime Episode guide, Chapter Yu-Gi-Oh 5D’s Episode 78 English Subbed A Nightmare Reborn! Machine Emperor Skiel Realizing Luna and Leo are in trouble, Yusei, Jack, Crow and Akiza head off to find them. Luna summons out Ancient Fairy Dragon, but it is soon absorbed by Machine Emperor Skiel. As Yusei and company can only watch, Leo recognizes his opponent as Lester. Luna takes some damage in order to protect Leo from Sukiel’s attack. Leo summons out Power Tool Dragon and, using traps and monster effects, manages to retrieve Ancient Fairy Dragon. Lucciano upgrades Sukiel and defeats Leo, knocking him off the bridge, but the Crimson Dragon appears and saves him. Luna’s counterattack fails, but her Duel Monster spirits prevent her from being hurt. When the group try to investigate Lucciano, they find his mansion has disappeared and no one at Duel Academy remembers him. Spurred on by this attack, Yusei becomes determined to learn Cosmic Synchro.