"Kouji Ibuki" is the secondary antagonist in the second arc of the Cardfight!! Vanguard (V Series Anime). He possess PSYqualia and has the power to sever the connection between a cardfighter and their units. After losing to Aichi Sendou, he has a change of heart towards Vanguard. During the fight against Wandering Star Brandt, he becomes the embodiment of Blaster Blade, who is one of Monarch Sanctuary Alfred's strongest soldiers. In Cardfight!! Vanguard Extra Story -IF-, he is one of the main characters alongside with Emi, Shuka, and Suiko.
At first, he is cold and is confident in his abilities as a cardfighter. He has a harsh tone towards Aichi Sendou for having the rare card Blaster Blade, which is a reminder of Ibuki's once-happy past. After losing to Aichi, he realizes how much of a good impact the game has had on the people he's fought, and no longer hates the game. His change of heart was so great that he fought alongside Aichi during the final fight against Wandering Star Brandt.
Ibuki has shoulder-length white hair with bangs that can cover his red eyes. Ibuki wears the male Fukuhara High School uniform for school.
When Kouji kept rejects believing it was a trick after traveling to the IF world, he and Suiko traveled to the IF world again.
In IF episode 14 he has a Cardfight against Toshiki Kai, and later when he was trying to protect him, but Aichi send Kouji into the past.