Yu☆Gi☆Oh! 5D's · Episode 66
Proof of Evolution Synchro Monster
Aired Wednesday, October 8, 2008 · 24 min
Synopsis
Despite the difficulties caused by the Dark Synchro Monster, Yusei manages to win his duel against the Dark Signer. However, after the duel, his opponent has no recollection of what happened and no longer has the birthmark or any Dark Synchro Monsters in his deck.
Synopsis excerpt via Kitsu.
Where to watch
Yu☆Gi☆Oh! 5D's episode 66 FAQ
When does Yu☆Gi☆Oh! 5D's episode 66 come out?
Yu☆Gi☆Oh! 5D's episode 66 aired on Wednesday, October 8, 2008.
What time does Yu☆Gi☆Oh! 5D's episode 66 release?
Kitsu has the date but not a broadcast time for this episode. Japanese TV anime typically air in the evening or late night JST.
Where can I watch Yu☆Gi☆Oh! 5D's episode 66?
Yu☆Gi☆Oh! 5D's streams on Hulu, Crunchyroll. Availability depends on your region.