Restart of "Cardfight!! Vanguard," a newcomer begins retelling the story anew. Fifteen‑year‑old Aiti Sendo is a weakling and a loser, soft, harmless, and looks younger than his age. His lack of self‑confidence prevents him from participating in "manly games" and drives him into a world of fantasy, where Aiti transforms into the Thunder Sword—a character from a rare card that was given to him three years ago. But reality abruptly interfered with the dream world when a classmate took the card, wanting to defeat the local champion. All Sendo could do was run to the game location at the moment when the Thunder Sword had already passed from hand to hand. When the victim begged to return the card, Kai (who was actually the winner) calmly offered to play for it. Thus Aiti had to play "Vanguard" for the first time in his life. Guess how it ended and what will happen next?
