Shield

A basic, optional trigger used for defensive purposes. The Shield (シールド) is a default Trigger used by all Border agents. It takes a trigger slot.

Appearance
A shield that looks like the Raygust shield pops up, but with a greenish glow. It usually takes an hexagonal shape, but can take more complex shapes, such as a crystal-like form, and a rounded form.

Abilities
As a fundamentally basic trigger, it is used by most trigger users. It creates a moderately strong shield that can be manipulated for size and power. Using the shields takes up a reasonable amount of trion, so the strength, durability, and size of the shields are normally dependent on how much trion the user is willing to put into it. Shields' resistance and durability are reversely proportional to the size: smaller shields have more strength and durability, but can be destroyed regardless of the size; even a small, focused shield can't resist an Ibis shot. As shown by Osamu Mikumo, these shields are rather disposable, as he uses it once to stop magnetic weapons without wasting his sword. Shūji Miwa also displayed the ability to divide a shield finely into numerous smaller versions in the same manner shooters do with their triggers to counter the animal bullets of Alektor. Additionally, as shield takes a slot in either the main or sub triggers, only one other trigger can be activated along with the shield.