Argh, I fell for it! He made it seem like Full Attack and it was Full Guard!

Ken Satori on Kōhei Izumi, in Arashiyama Unit 2.

Full Guard[1]



Kanji 両防御
Rōmaji Furugādo
Organization BrDr Border
Type White trion Normal (Mode)
Classification DE Defense (Defense + Defense)
- Increases Shield's durability by overlapping two
First Appearance
Manga Chapter 26
Anime Episode 14

Full Guard (両防御(フルガード) Furugādo?, lit. Double Defense) is the combination of two Shields, one through the main and one through the sub.


Full Guard generally takes the form of two hemispheres stacked on top of each other.[2] There is a small gap between the two strata, causing a chromatic difference between the outer layer (lighter) and the inner layer (darker).[2] The more Shields are overlapped, the darker the color.[3] Masataka Ninomiya and Yūma Kuga have used this technique through hexagonal Shields.[4][5]


As the activation of two Shields, Full Guard offers high defensive abilities. It can protect the user without drastically shrinking the total surface area, which is particularly useful when the attacker's location is not known.[6] For this reason, if activated at the right moment, it is an effective way to flush out hiding Snipers.[6] Like a normal Shield, Full Guard can be cast anywhere within about 25 meters of the user.[3] Multiple agents can also overlap their Shields into one, further increasing the resistance of the resulting barrier.[3] Since a Shield is activated both in the main and the sub, it is impossible to use other Triggers while in a state of Full Guard, making it a strictly defensive tactic.

Full Guard

Midorikawa, Kuruma, Tomoe and Okudera protect Yoneya.

Full Guard can withstand an Egret shot.[2] Masataka Ninomiya and Kōhei Izumi, who have two of the highest trion levels in Border, were able to block an Ibis[4] and a Chelidon[7] beam, respectively. In the former case, only the first Shield broke,[4] whereas in the latter, both were shattered, although the blast was deflected.[7] In normal circumstances, however, it seems to be impossible to stop Ibis even with Full Guard.[8]


See also: Shield users

There are at least 8 known users of Full Guard: Kōhei Izumi, Shun Midorikawa, Masataka Ninomiya, Tsuneyuki Okudera, Tatsuya Kuruma, Kotarō Tomoe, Yūma Kuga and Kai Minamisawa.[9] However, since all A and B-rank agents except 6 have two Shields in their Trigger set, many more have the ability to use it.


  • During the match against Tamakoma Second and Suzunari First, Rei Nasu activated two Shields, one in front of herself and one behind.[10] It is unknown if this is considered a case of Full Guard, as the two Shields were deployed in different locations.



e - d - vBorder Triggers
Basic Equipment Bail OutRadarTrion Body
Attacker Kogetsu (Kogetsu: Spear) • Raygust (Shield Mode) • ScorpionSōgetsu (Axe)
Gunner Asteroid • Cobra • Gimlet • Hornet • HoundMeteorSalamanderTomahawkViper
Firearms Assault Rifle • Grenade Launcher • Handgun • Minigun • Shotgun
Sniper EagletIbisLightning
Defense EscudoShield (Affixed Mode/Full Guard)
Trap Switchbox
Optional Bagworm • Bagworm Tag • ChameleonConnector • Dummy Beacon • Enhanced Radar • Full ArmsGeistGen'yōGrasshopperIdatenLead Bullet • Makō • Senkū • Silencer • SpiderStarmakerTeleporterThruster • Timer
Prototypes Connector • Dummy Beacon • Full ArmsGeistIdaten • Makō • Teleporter • Timer
Black Fūjin • Tsukihiko Amō's Black Trigger • Yūma Kuga's Black Trigger
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