In Japan, a gate to another dimension has opened, giving violent alien lifeforms known as Neighbors the opportunity to cross into our world and wreak havoc. To combat this new threat, the organization Border was founded. Their soldiers use highly advanced weapons known as Trigger to fight the Neighbors and preserve the peace. They're all also in either middle school or high school.
Enter New Transfer Student
Yūma Kuga, who has only recently moved to Japan and is unfamiliar with the local customs.
Mikumo, one of Kuga's classmates and a bonafide overachiever, tries to keep the school's bullies off of Kuga's back and teach the transfer student how to blend in. Kuga and Mikumo are, as you'd expect, quickly caught up in a sudden Neighbor attack. While Mikumo reveals himself as one of Border's soldiers, he's quickly outmatched by this Neighbor, but Kuga also turns out to have connections to Border and a powerful Trigger. However, after the battle, Kuga explains that he is not a Border agent. He's a Neighbor who crossed over to earth illegally!
A shounen manga that began in 2013, written and drawn by Ashihara Daisuke. An anime adaptation by Toei Animation
started in the Fall 2014 Anime
season on TV Asahi.
This page definitely Needs Wiki Magic Love
World Trigger Includes examples of:
- '20s Bob Haircut: This hairstyle seems pretty popular among Border agents, as many of them, including Chika, Haruka and even Mitsuru sport it. Even Kirie, who usually has long hair, gets a bowl cut when in Trigger Mode. Ai's haircut can too be considered a bowl cut of sorts, although it doesn't cover her forehead. Moira, one of the Neighbors, also sports one.
- The Ace: Jin has been referred to as the best in Border.
- Adaptive Armor: Kuga's Black Trigger powers.
- A House Divided: Border is split into at least 3 factions.
Kido's faction want the destruction of all neighbors.
Shinoda's faction wants to protect the town and people only, but will protect any neighbor in need just as much.
Rindō's faction wants to work with the good neighbors.
- Alien Invasion: Though with a premise like this, it was inevitable.
- All Your Powers Combined: The Trigger ability "Fullguard" (literally "Double Defense"), which requires 4 Trigger users to combine their powers, creating a shield strong enough to block repeated attack from the very strong Aftokrator Triggers.
- Amazon Brigade: Kako Unit, an all-female unit of Border and No. #6 A-Class team.
- Ambiguously Human: Yūma Kuga definitely
- An Arm and a Leg: The triggers generate replacement bodies during use which means everyone can loose limbs all the time without effect beyond the fight they're in.
- This is subverted hard in Yuma's backstory wherein he loses his arm (along with one of his eyes and a portion of his stomach) when he's attacked by a Black Trigger user. Since he's in a normal body the wounds to not disappear and his normal body has to converted into a Trion one in order to save his life.
- Badass Normal: Compared to characters like Yuma, Chika and Yuichi, Osamu only has his wits and knowledge to be able to fight against his opponents.
- Bittersweet Ending: The Large Scale Invasion Arc ends this way. Thanks to the combined effort of Border not a single civilian casualty was suffered and the Neighbours are forced to leave the planet without taking Chika thanks to Osamu and Replica. However six operators died when Enedra broke into Border HQ, 32 C-Rank agents were successfully kidnapped by the Neighbours, 90 civilians were still injured, Osamu is critically wounded and, due to being heavily damaged in the fight, Replica can't escape the Neighbours ship and sacrifices himself to ensure the Neighbours retreat. Not only that but besides from failing to steal Chika the Neighbours achieve every other goal they set out to accomplish during the invasion, including killing Enedra and ditching Hughes. As Jin points out this was the second or third best outcome the heroes could have achieved from this invasion.
- Blue and Orange Morality: Let's put it this way: Kuga has almost no idea how human society works, apart from the very, very basics.
- Boisterous Bruiser: Yōsuke Yoneya seems akin to this.
- BFS: The "Ray-Gust" Attacker Trigger which Mikumo uses.
- BFG: The "Ibis" heavy Sniper Trigger and Reiji Kizaki's unnamed Minigun Triggen.
- Broken Ace: Kitora has shades of this what with her need to constantly prove herself.
- By the Power of Grayskull!: "Trigger ON!"
- Call Back: In the first Chap no less.
- The Cavalry: During the Black Trigger Retrieval Arc. Arashiyama Unit comes to aid Jin against HQ's A-Class teams.
- Child Prodigy: Kitora joined Borders at a young age and now is in A-class. Same for Midorikawa.
- Child Soldier: Most Border agents are very young, to the point that Mikumo's classmates discuss applying and getting recruited.
- Subverted with Yūgo Kuga and other neighbors being adults and using Triggers. The same applies to the faction leaders of Border who mostly consist of veterans of the first wave of agents.
- In an interview, creator Daisuke Ashihara explained that it was because the Trion-producing organ develops until age 20 and then stop developing.
- Combat Clairvoyance: Jin's "Side Effect" which is basically a limited foresight, he can only see the futures of people he know.
- Combination Attack: Osamu and Chika's combined attack, where he powers his Asteroid Trigger with Chika's Trion.
- Cool Sword: Attacker Triggers.
- Creature-Hunter Organization: The Border Defense Agency against the aliens called Neighbors, whose members use the aliens' own Trion energy-powered weapons called Trigger. their members are people who have high trion levels. The BDA was formed specifically to defend against the neighbors, although it was revealed in the first episode that what they were fighting were actually just their drones called Trion Soldiers and that the neighbors are actually Humanoid Aliens.
- Dangerously Genre Savvy: See Trojan Horse.
- Death Seeker: Kuga has no reason left to live since his father's death. At least until Osamu gives him a new one.
- Dual Wielding: Border agents can carry up to 8 Triggers into battle (active and supports) and often use two of them at once. Can result in Guns Akimbo and Sword and Gun, depending on the Triggers used.
- Evil Is One Big Happy Family: Averted to hell and back with the Neighbors. First, they are not Always Chaotic Evil any more than the members of any other species. Second, the reason Neighbors harvest and abduct humans in the first place is because the Neighborhood is a wartorn mess of planetoids trying to blow each other sky high, and earth is (from their perspective) a massive stockpile of fuel (in the form of Muggle Trion glands) and potential recruits. Compared to the scale of the Neighbors' wars, their excursions to Earth are barely noteworthy.
- The Faceless: All Trion soldier faces' (with the exception of Replica) are just mouths with eyes peeking from inside. The eyes are their weakpoints, but they can close their teeth to protect them. This makes their "smiles" particularly terrifying.
- Fire-Forged Friends: Osamu, Yūma and Chika. Also extends to battle-comrades from other squads like Kitora.
- First Episode Spoiler: Both Mikumo's status as a Border agent and Kuga's status as a Neighbor are revealed in chapter one.
- Forever War: The Neighborhood is a godawful mess of these on a Warhammer 40K scale. If that weren't bad enough, and as long as this/these wars last, Neighbors will keep on looking for humans to enslave.
- Friendly Sniper: Chika Amatori, Ken Satori and Isami Tōma.
- Genre Savvy: The induction device allows neighbors to only pop up near their base instead of randomly throughout the city.
- Guns Akimbo: Pretty common among gunners. Satori, the Arashiyama-team's sniper, prefers doing this with two Sniper Rifles!
- Heroes Unlimited: The Border Defense Agency.
- Heroic Vow: Osamu's promise to to protect Chika for her big brother.
- Humble Hero: Osamu, big time.
- Idiosyncratic Episode Naming: With the exception of "The Invasion," every chapter title is the name of the character most relevant to that chapter (and can be one-shots, non-uniques, or groups). It's also not exempt from using the same character more than once. The anime subverts this, although some episodes still have character's name as part of the episode's title (Like episode 4, "Osamu Mikumo's Talent").
- Irrational Hatred: Shūji Miwa wants to maintain a blanket hatred for all neighbors and gets angry when Yūma offers to help his quest for vengeance by investigating which of the dozens of neighbor worlds was actually responsible for the death of his sister.
- Jerk Ass: The bullies and the muggers. Admitedly, Kuga was asking for trouble when he waved that wad of cash around in public, not that he understood that, though.
- Jerk Ass Has A Point: Commander Kido forbidding Yūma to help protect Chika during the invasion might have been a cruel and partially meant to upset Yūma and Osamu, but his reasoning was actually very sound. Yūma's Black Trigger would most likely cause panic among the civilians and is more useful on the front lines in any case.
- Knight Templar: Commander Kido and his faction want to kill all Neighbors to avenge their loved ones. Though later it becomes clear that only a part of them holds these extreme views. Others are mostly in the faction to be part of the more interesting missions.
- Katanas Are Just Better: The Kogetsu Trigger, which looks like one big energy Katana.
- Laser Blade: Kogetsu and Fūjin.
- Laser-Guided Karma: Every bully and mugger introduced so far either winds up out cold, attacked by a Neighbor or with at least two broken bones.
- Living Lie Detector: Kuga who inherited it from his father.
- Loophole Abuse: Jin uses this so he won't need to kill and take Kuga's Trigger.
- Meaningful Echo: This exchange seems to stir Osamu's memory.
- Morality Pet: Mikumo seems to be this to an extent for Kuga.
- Morph Weapon: Most Attacker Triggers
- The "Scorpion" is a light sword-like Attacker Trigger that can change length and shape which makes it very versatile at the expense of being fragile.
- The huge "Raygust" Attacker Trigger can also extend morph it's form with the Optional Triggers "Thruster" and "Shield".
- The "Kogetsu" Attacker Trigger can be extended with the "Senkū" Optional Trigger, allowing powerful ranged attacks.
- Meaningful Name: This is the case with most Neighbors and triggers.
- Mercy Kill: Not "kill", mind you. B-Rank sniper Haruaki shoots fellow squadmember Koarai during the invasion so that he could bail out, when he'd be captured otherwise.
- New Transfer Student: Kuga starts off as this.
- Nice Guy: Mikumo goes out of his way to help and protect Kuga, the school bullies and everyone else. Jun Arashiyama is also constantly cheerful and polite and therefore the ideal "Face of Border".
- Non-Human Sidekick: Kuga has Replica, a little black mokuna-like critter.
- No Range Like Point-Blank Range: Osamu's strategy in the mock-battle against the much superior Kazama. And it worked!
- Older Than They Look: Yūma Kuga has an artificial body made of Trion which doesn't show any signs of aging, so he looks like a young boy despite being years older. Doesn't mean that he's immortal though...
- Omniscient Hero: Jin's Side Effect allows him to see the future - sometimes years in advance. This makes him an amazingly convenient plot device, as the mangaka himself admits.
- One Steve Limit: Subverted in that both the captain of Suwa Unit and one of the Snipers of Arafune Unit are called Kōtarō (although the Kanji writing is different)
- Prophet Eyes: Jin side effect allows him to see the future.
- Razor Wind: Fūjin.
- Reasonable Authority Figure: Jin's boss Takumi Rindō of Tamakoma Branch.
- Also General-Manager Masafumi Shinoda who is mostly interested in keeping peace and had friendly interactions with neighbors in the past.
- Revenge Before Reason: Shūji Miwa and a part of Commander Kido's faction hate all neighbors for causing the deaths of their loved ones and would never consider making distinction between good and bad Neighbors like Kuga.
- Stepford Smiler: Behind Kuga's usually antics belies a young boy who feels he has nothing to live for and is just waiting until his death happens How freaking depressing is that.
- Sword Beam: The Black Trigger Fūjin.
- Sword Fight: During the Black Trigger Retrieval Arc. Jin alone vs. Kei Tachikawa, Sōya Kazama, Shirō Kikuchihara and Ryō Utagawa, and also Tōru Narasaka and Shōhei Kodera (but they used rifles instead).
- Took a Level in Badass: Osamu becoming a B-Class agent could count. Subverted in that he doesn't really become more competent from the promotion itself, but he does at least get access to more powerful Triggers. He also takes some real Badass-Levels with training in Tamakoma and combat experience.
- Trademark Favorite Food: Jin and his Bonchiage (fried soy sauce rice crackers).
- Trojan Horse: the bug neighbors were attached to the wormster neighbor in chapter 1 allowing them to interfere with the border induction device.
- When She Smiles: When Kitora genuinely smiles.
- Also played for laughs in chapter 36 when Karasuma talks to her and Osamu after Osamu's battle with Kazama.
- Wise Beyond Their Years: Mikumo is incredibly mature for his age, deciding to keep his working for Border a secret despite the fact that it would likely scare off the school bullies and working hard to get good grades.
- World Building: Each chapter reveals about this world.
- The types and capabilities of Neighbors.
- Borders inner workings, machination, hierarchy, and history.
- The types of working of Trion and Triggers.
- The nature of the world on the other side.
- X Meets Y: Stargate SG-1 meets Shōnen to some degree.