Cardfight!! Vanguard: Season 4, Episode 13

4 - 13: The Place Where Aichi Will Return

Kai and his fellow mates continue the search for Aichi. They follow up on the clue that Ren gave them, arriving at a Stonehenge-esque like location in Japan. Among the ancient ruins, Ishida fights Gaillard, and when that battle royale is over, another opponent appears, one who startles them all!