Cardfight!! Vanguard: Season 9, Episode 6

9 - 6: TURN 6: Overlord's Purge

Kai and Arata searches for the secret base of the Apostles, while Makoto meets up with Kamui and Misaki to sneak into the Apostles` secret research facility. The one who awaits them is the one who became a Diffrider, Wakamizu.