The world has forgotten following the battle against Link Joker . While Toshiki Kai and Naoki Ishida have managed to regain their memories, Misaki Tokura remains unable to remember him, which is particularly unusual given her photographic memory.
, titled "Legion" (Japanese: 双闘（レギオン） ), is the second episode of the Legion Mate arc (Season 4) of Cardfight!! Vanguard , originally airing on March 16, 2014 . This pivotal episode introduces a revolutionary game mechanic and focuses on the struggle to restore the forgotten memories of the series' protagonist, Aichi Sendou . Plot Summary Cardfight!! Vanguard Episode 165
: Introduced as a power allowing two units to share the Vanguard circle simultaneously. The world has forgotten following the battle against
Cardfight!! Vanguard: Legion Mate Hen – Episode 2 [Ride 165] Vanguard , originally airing on March 16, 2014
: This episode marks the second entry in the Legion Mate-Hen series, which focuses on Kai as the lead protagonist searching for the missing Aichi .
: The episode ends with a mysterious group, the Quatre Knights , observing the trio and realizing they must intervene now that Misaki has remembered Aichi .