The history of -IF- world has been distorted and cardfights do not exist. Ibuki and Suiko get involved with Emi and Shuka. A journey to regain the true history by four people begins—! (Source: Cardfight!! Vanguard Wiki)
Genres: Action, Adventure, Comedy, Mahou Shoujo
Watch Cardfight!! Vanguard Extra Story -if- episode 1 online — subbed and dubbed, with automatic AniList / MyAnimeList progress sync.