Seasons & Episodes
Visitor from the Other World
Approximately four years ago, a gate to another world opened in Mikado City, and invaders called Neighbors appeared.
Neighbor and Trion Soldier
Border sees the Neighbor Yuma as an enemy… but Osamu is unable to view him as someone with hostile intentions, and tru
Osamu Mikumo's Ability
Combat-use Trion Soldiers attack when a gate opens in Osamu’s school just outside of the Forbidden Zone. Worried he’
Ai Kitora, A-Rank No.5 Agent
Osamu gets more trouble than credit when he claims to have defeated Trion Soldier Marmod. Really, he’s covering for th
Power Elite, Yuichi Jin
Kitora boldly jumps onto the back of Ilgar, a new type of Trion Soldier, while it’s mid-flight and bent on attacking t
Chika Amatori's Side Effect
Yuichi and Osamu's critical mission to investigate the abnormal gate puts a lot of pressure on Osamu. Meanwhile, Yuma fo
Miwa Squad's Assault
Osamu reaches out to Yuma and Replica. He and Chika learn some critical information about Neighbors from Yuma, but they'
Black Trigger
A-rank agents Shuji Miwa and Yosuke Yoneya make an assault on Yuma without even asking what happened. Osamu calls Jin to
The Organization Known as Border
With Shuji's squad singlehandedly defeated, the Border Agency's executives order Yuichi to defeat Yuma and recover the B
Tamakoma Branch
Jin encourages Yuma to join the Tamakoma branch. Yuma accepts it if he can team up with Osamu and Chika.
The Determination of Each One
Osamu hears from Replica about why Yuma came to this world, and from Chika about her true feelings.
A-Rank Agents of Tamakoma
Osamu, Yuma and Chika decide to join Tamakoma branch to go to Neighbor world as A-rank agents of the expedition force. T
Border Top Team
Commander Kido fears that Tamakoma branch will become too powerful. He orders A-rank agents who belong to the headquarte
Miwa Corps
The battle between the A-Rank attack unit and Yuichi Jin begins to rage. In the face of top-level agents, Yuichi tries t
Black Trigger Wind Blade
Yuichi finally reveals his "Wind Blade" technique with the Black Trigger. As his battle with A-Rank vets Kei and Soya re
To the Future
Yuichi Jin and the Arashiyama Unit repel the enemy. Receiving news of their elite squad's defeat, the Border Agency's he
Border Official Enlistment
The day of Yuma and Chika's initiation into the Border Agency arrives. Osamu nervously stands by in support, while they
Mikumo Shu VS Kazama Souya
Osamu readies for his practice fight against Soya Kazama. Soya is a symbol of overwhelming strength, while Osamu has yet
Ranking Battle! Midorikawa Jun's Strategy
Osamu doesn't know how to deal with his new reputation as "the guy who tied with Soya Kazama". He is soon challenged by
Duel! Yuma VS Midorikawa
Yuma and Shun Midorikawa's fight begins. Yuma quietly rages over Shun's humiliating public defeat of Osamu. How will he
Neighbor's World
The Border brass puts together a strategy based on Replica's information about Neighborhood. Meanwhile, Yuichi Jin sense
A Large-Scale Invasion Starts
The Neighbors' large-scale invasion finally begins. The invading army of Trion soldierrs is countered with a defense str
The Holy Land, AftoKrator
Border seeks a way to counter the new Trion soldier, Rabbit. Yuma prevents Trion soldiers from infiltrating the city, bu
Nestling from Mysterious World
Trion soldiers from Aftokrator appear all over Mikado City. Border is forced to divide its forces to deal with their num
Best Force in Border
The C-rank units are revealed to be the true target. The battle intensifies as Hyrein sends humanoid Neighbors Enedora a
Fierce Fight! Enedora vs. Kazama Squad
Aftokrator's humanoid Neighbors are unveiled. These so-called Horn Triggers overwhelm the Border agents with powerful Tr
Counterattack of Border
Kizaki, Karauma and Konami fight the sinister Hyuse and Viza so that Osamu and Chika can escape. Meanwhile, Ranbanein ea
Star Wand Master
Kizaki has figured out Hyuse's Trigger, Lambiris. He orders Karasuma and Konami to protect the city while he holds off H
Crossroads of Destiny
Viza and Hyuse continue to pursue Chika, but Yuma and Jin arrive just in time. Yuma faces off against Viza while Jin bat
Enemy Commander High Rain
Suwa unit traps Enedora in a virtual training room. Director Shinoda goes to offer them back-up, and the tides begin to
Mikumo Osamu's Consciousness
Hyrein's attack turns Chika into a cube. Osamu blames himself, but is inspired by his fellow Border agents to race for B
Implacable Enedora
Director Shinoda corners Enedora in the virtual training room. However, Enedora's powerful Black Trigger attack are more
The Terror of Hyrein
Karasuma uses his personal trigger Geist against Hairein. He can gain strength and speed, but he has only 200 seconds le
A Fierce Showdown! The Fight of the Best
Miwa uses a trigger Lead Bullet against Hairein. Meanwhile, Yuma decides to carry out a desperate attack against Viza.
The End of the Battle
Yuma defeated Viza, but he has a few Trion left. Miwa was moved away from Osamu by Mira's trigger. Now there are only se
The Have-not
Aftkrator withdrew from our world and the 2nd large-scale invasion is over. Although Chika was saved, Osamu lost conscio
A Hero and a Partner
Osamu becomes conscious, and talks with Yuma after hearing the situation from his mother and Chika. One of higher-ups Ka
B-Rank Wars Begin
Many journalists ask the higher-ups of Border about responsibility for damage caused by the battle. Osamu hears about Ne
Suwa Squad and Arafune Squad
Yuma and Chika won their first Rank Battle as Tamakoma Second Unit in front of injured Osamu. Their next opponents are t
Setting off! Mikumo Squad
Osamu recovered and rejoined his unit. Tamakoma Second had the right to choose the location this time, and they chose an
An Impertinent Rookie
The match seemed that it would favor the unit with the most snipers, but Arafune Unit is being driven into a corner by r
Ko Murakami of Suzunari-1
Tamakoma Second's next opponents are the 13th place, Nasu Unit, and the 9th place, Suzunari First Unit. Yuma gets a chan
Nasu Squad's Choice
Murakami's side effect is especially troublesome issue. Osamu thinks about how to prepare for the next Rank Battle.
The Battle in the Foul Weather
The Rank Battle started. Nasu Unit takes tactical actions as planned in the storm. However, Chika's sniping changes the
The Thing That Decides the Battle
The agents have been divided into east and west across the river. On the west side, a three-way battle between the attac
The Ace's Willpower
On the east side, Kuruma and Betsuyaku are at the mercy of Nasu's shooting. Osamu doesn't want them to be defeated faste
The Captain's Pride
Chika breaks the bank of the river by her sniping, and draws the water into the city. Osamu wants Yuma to join him as so
And Towards the Future
Mikumo Squad joins the B-rank upper tier. The fight against the top B-rank squads will be a touchstone for promotion to
Fugitives from Another World
Start of World Trigger new arc, Toubousha-hen. Unknown Trion soldiers show up at Border HQ. Jin and Tachikawa take them
Invisible Assailants
Zeno, a refugee from Elgates, begs Yuma and Osamu to harbor Lilith and him during their stay in this world. With Chika t
Xeno's Trion Soldiers
Kazama Squad heads into combat as Gojima City is attacked by new Trion soldiers. Osamu tries to befriend Zeno and Lilith
The Sunset of Meeden
Despite Lilith's best efforts, she can't hide her loneliness. Chika and Osamu work with Kitora and Midorikawa to try and
The One that Shall Be Saved
While studying with Yoneya and Kodera, Miwa sees young siblings and is reminded of his past. The peace is shattered by a
Giev's Thrust
Zeno's devotion to Lilith leads him to treat Yuma and Chika like tools, enraging Osamu. Meanwhile, Gieve and Karon threa
Dead or Alive
Arashiyama Squad gathers Border's aces! Arafune and Murakami join in the battle, destroying Gieve's Trion soldiers. But
The Secret of Lilith
Shiori takes Yuma, Osamu, and Chika on a relaxing trip to Shizuka Marine World with Zeno and Lilith. But the peace is in
Xeno and Lilith
Lilith reveals her true power in order to save Xeno and Yuma.
The Captured Osamu
Yuma, Chika and Xeno take the fight to the enemy in order to rescue Osamu. However, a cunning trap separates them, forci
The Two Black Triggers
Zeno and Chika find Osamu, while Yuma continues his fight against Giev. He struggles against Giev and Charon's skillful
The Adventure of Yotaro
Yotaro heads towards Shizuka City with Raijinmaru, hoping to catch up to Konami. He meets a troubled young girl named Co
Truth and Lies
Gieve and Charon begin their attack on Yuma.
Giev and Charon
Giev's secret is revealed. Just like Lilith, he's a Humanoid Trion Soldier created by Lamia. Meanwhile, all of Shizuka C
A Reversed Future
Xeno's hand cuts thin air, and monster Gieve takes in Lilith and takes on a grotesque form.
A Prisoner from Aftokrator
Soon after meeting and parting with Xeno and Lilith, Yuma, Osamu and Chika begin preparing for their promotion battle.
No.1 Shooter, Masataka Ninomiya
Aftokrator's Black Trigger user, Enedora, is alive! Enedora sheds new light on the Large Scale Invasion and the reason t
Sharpened Fangs
Tamakoma-2 starts individual training in preparation for the B-Rank rank wars. Osamu visits Arashiyama for shooter train
The Battle of the B-Rank Top Teams
During their brief encounter, Yuuma senses Kageura's limitless skill. Osamu receives shooter training from Arashiyama an
The Targeted Tamakoma
Ninomiya Squad, Kageura Squad, Azuma Squad and Mikumo Squad face off! As tensions mount, each team targets Osamu and clo
A Battle Royal
Osamu is quickly knocked out of combat by Azuma, former leader of an A-Rank No. 1 team. Chika tries to overcome her inab
A Captain's Duty
Yuuma faces Kageura. Ninomiya takes advantage of this to attack them both. After the battle, Osamu is devastated by his
A New Threat
Shinoda announces an imminent invasion by a new Neighbor country. Tachikawa and Kazama Squad are assigned to deal with t
An Evolving Mikumo Squad
After the Rank Wars against the B-Rank upper tier squads, Mikumo Squad tries to up their game. Yuzuru gives Chika an ide
To the Future
Osamu continues to try to improve himself, Chika confronts her faults, and Yuuma has faith in them. Mikumo Squad's losse
The Attack
Aftkrator have ordered Galopoula to make Border stuck, so Galopoula's Expeditionary Force tries to break into Border HQ
Collision
Inside the Border HQ, the battles begin: Gatlin and Ratarikov v. 4 strong attackers near the dock, Wen So v. Nasu and Ku
Battle
Border and Galopoula's Expeditionary Force play mind games reading each other's thoughts while fighting. Reghindetz is f
Destiny
Border fights off the enemy one by one, but Gatlin and Ratarikov have no intention of giving up on completing their miss
New Technique
About the time Jin brought Hyuse into Border HQ, Tamakoma Second started the match against Katori Unit and Kakizaki Unit
Strong Will
Chika starts destroying buildings outside the area where Osamu has set the trap. When Yuma puts Kakizaki Unit in a corne
Showdown
Fumika Teruya prioritizes getting to Chika. Yoko Katori recalls the day her and Hana's fate changed as she fights agains
Negotiation
The match was over. A party is held at the Tamakoma branch to celebrate their victory, and then Hyuse offers himself to
Captain
Osamu negotiates with higher-ups to get permission to include Hyuse in his team. Instead of allowing it, Commander Kido
The Upper Rank
Tamakoma Second fights in a match against Oji Unit and Ikoma Unit. They have only three matches left, and need to be in
The strong ones
Yuma attacks Oji Unit. Besides, Ikoma and Mizukami catch up with them and Ikoma uses his special technique to strike the
Rookie
Yuma, Oji and Ikoma fight each other fiercely while the battle between the snipers comes to an end. Later, Hyuse shows B
New Start
With Hyuse joining as a member, Mikumo Squad makes a fresh start as a new Tamakoma-2. Before the Rank Wars match, Tamako
Choice
During the dinner at Okonomiyaki Kageura, Yuma is told Yuzuru Ema's real thought that he is going to give up on victory
Strategy
The stage that Suzumaki Daiichi chose in the B class rank battle, ROUND7 was "Urban Area D". The battle was expected to
Secret Plan
Suzunaru Daiichi Murakami holding a black arc moon and Kageura attacking with a scorpion that can be transformed. With t
Unrivaled
Yuma and Hyuse fight together and make Kageura bail out, but the point goes to Suzunari-1, who dealt the most damage. Ne
Decision
B-Rank Wars Round 7 finally comes to its final phase! Being gradually surrounded by Tamakoma-2 who got an advantage in n
Premonition
Tamakoma-2's result for B-Rank Wars Round 7 exceeded Osamu's expectation, but the bad feeling he had from before the mat
Will
Those who the Tamakoma Branch members happened to meet at a barbecue restaurant are Ninomiya Squad agents, their opponen
Formidable Opponent
Yuuma gathers information about his next opponent. Through Shun Midorikawa, he goes to the border headquarters to get an
Change of Plans
At the Tamakoma Branch, they are developing game plans based on the information that each of them gathered, but it is ha
Final Round
At last, the Final Round begins. Chika is ferociously attacked by Ninomiya as soon as the match starts. Amid the intense
Melee
Osamu attempts to open the way for Hyuse who is encircled. However, receiving fierce attacks from Ninomiya Squad, Ikoma
One-on-One
After Hyuse's dropout, a melee unfolds as the surrounding teams take on each other. While intense battles progress, the
Resolution
Tamakoma-2 and Ninomiya Squad, the last two teams left, have a head-to-head fight. Ninomiya Squad awaits Tmakoma-2's act
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