Tasuku Ryuenji, a member of the Buddy Police, busts a fugitive; Gao Mikado watches the heroic scene on TV, and it gives him the courage to dispense some justice of his own.
Tasuku accepts Gao's challenge and the fight is arranged; Gao gets help from Baku on building a deck to suit his playing style; later, Gao and Tasuku's Buddyfight commences in the school's amphitheatre as Gao's friends watch from the stands.
Forced to find a practice partner, Gao picks an unlikely opponent for his next Buddyfight; later, Gao upsets Drum and he threatens to reject Gao as his Buddy for good.
Gao and Drum have a big argument right before Gao leaves for school; Kiri learns about Buddyfighting and participates in a training session.
Gao finds something amazing while taking a walk during the school field trip; Wolf manages to get some of the material as well, and it causes him to have unusual abilities.
Rouga wants revenge and Gao acts before thinking of the consequences; Gao soon learns that the mentality that winning is everything is wrong.
Marie Mizuno
Gao Mikado
Soma Saito
Tasuku Ryuenji
Shota Aoi
Gaito Kurouzu
Yūko Sanpei
Kanata Ozora
Shintarô Oohata
Drumbunker Dragon