Cardfight!! Vanguard
S4 · E21 — The Oath of the Blue Flames
S4:E21 · The Oath of the Blue Flames
33 episodes in this season
Missing Vanguard
25 min
Legion
Aichi's Shadow
Seek the Mate
Naoki's Fist
Blue Flame Gaillard
Steel Neve
The Leader Kai
Meet Great Daikaiser!
Illusionary Rati
Frosty Ice Serra
Ren's Promise
The Place Where Aichi Returns
The Announced Truth
Island Awaiting the Wind
Kai's Will
Gateway to the Sanctuary
Manly Big Bang
Will of Steel
What Doesn't Change
The Oath of the Blue Flames
The Flames of Perdition
Interrupted Sleep
Aichi Awakens
Cold Ambition
Return of Omega
Determination of the Bluish Flames
Our Place
The Obstinacy of the Flames
Sword of Annihilation
Sword of Courage
A Season for Journeys
Vanguards
