Ace of Diamond: Season 1, Episode 66

1 - 66: Outsider

Inashiro loses by 1 at the Koshien Finals, but the game still doesn't deliver the excitement of the Seido, Inashiro showdown. At Seido, an outsider observes many of their practices before approaching Coach Katoka. Many players begin to wonder who this gentleman is and if he could possibly be a spy.