Kanesada Kaji competes in the Ace Buddyfighter Play-offs, facing Yuga Mikado in his first match during the shop preliminaries. A master of Katana World and an expert swordsman, his formidable skills prompted Yuga Mikado to devise a new ninja-themed deck strategy specifically to counter him. Kaji's tournament run includes losses to Yuga Mikado in episode A16 and to Masato Rikuo in episode A22 during the shop preliminary finals.

He wields the significant Katana World Item card "Excelblade, Godslash KANESADA," identified as "Kanesada's finest work." This Excelblade/Bladedancer/Weapon card requires paying one life point to equip and prevents the user from calling monsters to the center position. While equipped, the card itself cannot be destroyed or returned to hand by opponent card effects, and all allied 《Bladedancer》 cards gain immunity to being rested by such effects. It also possesses a counterattack ability.

Character classification tags identify Kanesada Kaji as a battle gamer, a child, and a sword fighter.