Masato Kageura/Plot

Background
Kageura is the second son of an owner of an okonomiyaki restaurant. He joined Border approximately three years before Chika Amatori and Yūma Kuga. He came to a mutual understanding with Hiro Kitazoe after eight rounds of solo battle. At some point Kageura Unit was formed and climbed to A-rank no. 6, but it was demoted when Kageura threw an uppercut at Eizō Netsuki. That or similar incidents resulted in a deduction of 8000 points.

Introduction Arc
Kageura Unit presumably takes part in the extermination of all Rads in Mikado City.

Large-Scale Invasion Arc
Due to Masafumi Shinoda preventing B-rank units with missing members from fighting against Aftokrator's forces out of fear of capture, Kageura Unit was not deployed.

Round Four
Upon hearing that Tamakoma Second is due to fight Kageura Unit next, Kō Murakami arranges for Yūma to meet Kageura. As Kageura waits for him in the solo rank battles hall, two trainees begin to badmouth him telepathically, which he picks up on thanks to his Side Effect. He calls them out and decides to let them off the hook, but when they resume mocking him, he beheads them faster than they can process, forcing them to revert to their normal bodies. When they protest that he will be demoted again, he counters that they did not see him do anything. Just then, he spots Murakami and Yūma. While Murakami sets the trainees running, Kageura growls at the other trainees staring at him. Murakami and Kageura discuss the incident for a few moments before Yūma steps in. The notion of the short, younger-looking boy defeating Murakami amuses Kageura, who then proceeds to try to rile Yūma up. The latter's's nonchalance however surprises him, and Kageura decides to leave without sparring, stating that he has no obligation to give his future opponent any information.

The attack on the two trainees causes him to lose an additional 2000 points. On February 11 Kageura watches the logs of Yūma's battles against Murakami and Tetsuji Arafune, prompting his teammates to comment on the rarity of the event. Four days later, during the night division of rank battles, the match opposing Kageura Unit, Ninomiya Unit, Azuma Unit and Tamakoma Second begins in a snowy Cityscape B. Kageura spawns to the south of the stage and proceeds to target Yūma. Hikari Nire tells him to score some points, but he retorts that he will fight the ace of Tamakoma Second first. Thanks to Shinnosuke Tsuji delaying the latter, Kageura is able to cross blades with him, preventing him from going to Osamu Mikumo's rescue. Yūma eventually manages to disengage to cover Chika. Kageura follows him and finishes off Sumiharu Inukai after Yuzuru Ema injures him, allowing Chika to bail out on her own.

The Attackers of all four team are now in the same place, and a battle royale begins. Lacking Grasshopper, Kageura is unable to reach Yūma and the two Attackers of Azuma Unit. He calls for Kitazoe's help, but Haruaki Azuma intercepts the bullets. However, the Gunner manages to get off a few shots before being taken out by Masataka Ninomiya. Tsuneyuki Okudera is launched towards Kageura, who cuts him to shreds. With Yūma defeating Noboru Koarai and Azuma sniping Tsuji, Kageura can resume his duel against Yūma, but Ninomiya soon interrupts them with a Full Attack Hound bombardment. As the Shooter closes in, Yūma attempts to attack him, only for Ninomiya to force him to bail out before his Mantis can reach him. Kageura is surprised to see Yūma mimic his technique. A dejected Kageura is forced to hide as Ninomiya does the same, lest they be taken out by Azuma. Eventually, time runs out and Kageura Unit ties in second place with Azuma Unit.

Galopoula's Blitz
Yūma agrees to have a Solo rank battle with him, but gets lost. He eventually finds him, complaining that he was getting impatient. He fights with Kako over having Yūma.

Round Five
On February 19, the night of Galopoula's blitz, Kageura Unit fights a rank battle against Azuma Unit and Yuba Unit.

Round Six
Kageura Unit fights against Ninomiya Unit, Azuma Unit and Suzunari First in the night division of the sixth round of rank battles. During the battle, Kageura pulls off a sneak attack on Ninomiya and the two take each other out. Kageura Unit and Ninomiya Unit tie at the top with three points. No unit receives the survival bonus due to there being multiple survivors.

Round Eight
On March 5, Kageura Unit faces off against Ōji Unit and Azuma Unit in the day division of rank battles. Azuma Unit wins the battle, which took place in Exhibition Hall, with a final score of 4-3-3, after Okudera's distraction allows Azuma to snipe Kageura.