Cardfight!! Vanguard Legion Mate, a 33-episode entry from the long-running franchise, is now available on Crunchyroll with both English dub and subtitles. The series picks up after the events of Cardfight!! Vanguard Link Joker, but finds the world irrevocably changed as protagonist Aichi Sendou is seemingly erased from everyone's memory.

When Toshiki Kai discovers this strange amnesia affecting his rival and friend, he's compelled to uncover the truth. His investigation leads to a vision of Aichi's signature unit, Blaster Blade, and a stack of cards materializing in his hand, reigniting the card battles that define the series. TMS Entertainment produced the series, which originally aired in Spring 2014.

As a complete series, Legion Mate offers a self-contained arc within the larger Cardfight!! Vanguard narrative. It explores themes of memory, friendship, and the power of card battles, serving as a direct bridge to the subsequent Cardfight!! Vanguard G series.