It becomes obvious pretty early on with Cardfight!! Vanguard that whoever said 'Don't judge a book by its cover' was.clearly not talking about this show. As he musters up his courage and pictures himself winning this decisive battle, Aichi begins to find his way into the adventurous world of Cardfight Vanguard. Much to everyone's surprise, Aichi rises up to the occasion.
To make matters worse, Kai refuses to return the card unless Aichi defeats him in a cardfight.
After a turn of events, Aichi soon discovers that the card is now in the hands of Toshiki Kai, a cardfighter who has become the strongest in town despite having only recently arrived. However, one day, school bully Katsumi Morikawa notices Aichi's treasure and snatches the card away from him. Whenever he feels down, he takes a glance at Blaster Blade-a legendary rare card given to him when he was young-and gains the motivation to move on with his life. The game has inspired many people, one of which is the quiet and timid Aichi Sendou who is often ridiculed and bullied by his peers. Players of the popular game are called 'cardfighters,' and they frequently battle each other in card shops. Taking the world by storm, the card game Cardfight Vanguard has influenced many to integrate card games into their everyday lives.