Trion

The four protagonists with approximate projections of their trion levels.

Trion (トリオン, Torion ^?) is a biological power source, or energy, that resides within every living human, and possibly in other life forms as well. This energy provides power for a Trigger's various abilities and functions.

Description

Trion is produced by an invisible organ, better known as the Trion Gland (トリオン 器(き)官(かん), Torion Kikan, Lit. Trion Organ ^?). It is not known in the human world, but every human possesses this organ, located next to their heart. Every human's trion gland has different trion values. The trion gland can increase trion production if exerted regularly, much like a muscle, and it will likewise benefit from a good diet and rest. After the age of 20, however, it stops developing and starts to decay if not exerted. this leads to countries recruiting children due to how their gland can still grow, However places like Border allow for older applicants if they have the Trion, while in the neighborhood, it is common for people in their 30s and 40s to still be on the frontlines, with combatants at Viza's age are rarer. Additionally, How much trion a person isn't related to genetics, meaning someone with low amounts of trion can give birth to a person with decent to Black Trigger levels of trion. this leads to countries to look even among unremarkable families for recruitment, however criminal history can still play a factor. A high trion value can allow an individual to develop one or, in exceptionally rare cases, multiple Side Effects, and plays a crucial part in the creation of a Black Trigger.

The functions of the trion gland are directly connected to a Trigger's power. If the same Trigger is used by a different person, differences will appear concerning their trion values. While using a Trigger, the user will go into a Trion Body, which is their body made fully of trion. Their normal body goes into the Trigger holder. They squirt out gas instead of blood (green and later dark grey gas in the anime). If the trion body is destroyed, the body will revert to their normal body, Trion bodies amongst A-Rank, and B-Rank will initiate bail out, upon completion will result in transformation to their real body. C-Ranks, Black Trigger users and Neighbors (with the exception of Galopoula) lack the Bail Out process and as such are immediately transformed on the spot. Yuma is a rare case of already being in a trion body before transformation so he transforms back into his original Trion Body. The regeneration time is proportional to the person's trion value; the greater the trion value, the longer the regeneration time.

Aftokrator's Trion Receptors increase both the amount of trion an individual has and its quality as they grow.

Trion Values

Border quantifies the trion of its personnel and neighbors using a value of 1 or higher, but it is unknown how other countries do it, however Replica has shown the ability to show visualizations of a person's Trion levels. Aspiring combatants with low trion tend to be rejected from Border, though they are still able to work for Border in other roles, such as Operator or Engineer. Border combatants' trion typically ranges from 4 to 9 when using normal triggers, though there are exceptions. For example, Chika Amatori has a trion value of 38, which is the highest known one in Border. On the other hand, Osamu Mikumo only has a trion value of 2, which is the lowest known one among Border's combatants. However, there are operators with a trion value of only 1. Black Triggers provide a significant boost in trion to their users, as shown with Yūichi Jin, who has a trion value of 7 when using normal triggers and a trion value of 37 when using Fujin; This is due to how the trion used to make the black trigger is condensed. Additionally, Aftokrator's Trion Receptors increases the amount of trion an individual has as they grow. going by border's numeral system, Hyuse (who has the lowest trion among Hyrein's Expedition Force) has a value of 16, whereas Masataka Ninomiya who had the highest value in Border before Chika's enlistment has a 14. If Chika is factored in, All 4 of the expedition force's black trigger users all have higher trion values than chika's 38, however she has higher trion than the horn trigger users.

Replica's Visualization of Osamu's trion level

Differences in trion can manifest in a number of ways. Higher trion allows Shooters to manifest larger trion cubes when preparing to fire and also allows them and Gunners to fire more bullets. It also increases the power, range, and speed of bullets, which is also the case for Snipers, though for them, the parameter increased depends on the specific sniper trigger equipped. The durability of Shield also increases with the user's trion. Furthermore, individuals with high trion can sacrifice themselves to produce a black trigger, as Yūgo Kuga and Sōichi Mogami did.

Bullet Forms

When Shooters use their gunner trigger, with the exception of Kako, always appears in the shape of a cube which can be split. Most Agents choose to split the cube into either 8, 9, 27, or 64 parts or choose to not split the cube at all, however it has been shown that pyramids and Tetrahedra are also possible, however it is an advanced technique for people who want to control the number and power of the bullets in detail.

It should also be noted that Nozomi Kako has a custom Hound which appears as a Sphere which from which smaller sphere are emitted.

Trion Quality

Trion differs among individuals also due to its quality. How exactly this property affects it is unclear, but it has been suggested that higher-quality trion makes trion manipulation easier, which in turn improves the accuracy of one's control over their Triggers.

Trivia

• Trion capacity can be inherited, but it isn't always the case.
• It is currently believed that it is impossible to remove the trion gland without killing the person, however it was stated removing black triggers might be possible.