World Trigger

Approximately four years ago, a gate to another world opened in Mikado City, and invaders called Neighbors appeared.

Border sees the Neighbor Yuma as an enemy… but Osamu is unable to view him as someone with hostile intentions, and trust begins to bloom between the two boys. Osamu finds himself caught between his own thoughts and the rules of the organization he belongs to, Border.

Combat-use Trion Soldiers attack when a gate opens in Osamu’s school just outside of the Forbidden Zone. Worried he’s not strong enough, Yuma tries to stop Osamu from fighting back, but Osamu’s determination to save the other students is limitless.

Aftkrator have ordered Galopoula to make Border stuck, so Galopoula's Expeditionary Force tries to break into Border HQ to destroy the ship for the expedition. Hyuse goes to meet them secretly in order to go back to his homeland.

Inside the Border HQ, the battles begin: Gatlin and Ratarikov v. 4 strong attackers near the dock, Wen So v. Nasu and Kumagai in a hall. Outside the HQ, the teams struggle with some drones that move like humans. Meanwhile, Jin is surprised that Yotaro follows Hyuse with Raijinmaru.

Border and Galopoula's Expeditionary Force play mind games reading each other's thoughts while fighting. Reghindetz is frustrated that his diversionary plan is not working.

With Hyuse joining as a member, Mikumo Squad makes a fresh start as a new Tamakoma-2. Before the Rank Wars match, Tamakoma Branch's senior members, Michael Kronin and Yuri Rindo return to the branch. Yuri Rindo reveals the unknown past of the Tamakoma Branch.

During the dinner at Okonomiyaki Kageura, Yuma is told Yuzuru Ema's real thought that he is going to give up on victory in B-Rank Wars Round 7 because he cares for Chika. Meanwhile, at Tamakoma Branch, Osamu is feeling something uneasy deep in his heart just before the Rank Wars.

The stage that Suzumaki Daiichi chose in the B class rank battle, ROUND7 was "Urban Area D". The battle was expected to be fought in the shopping mall in the centre of the map, and each team hurried to take countermeasures. Knowing that the wire line would not work effectively, Osamu decided to take advantage of Hughes, who had just joined the team and was not known to the other teams. With time, all the troops start to transfer. Yuuma and Hughes are the first to arrive, and Shu is on his way to join them. The battle begins with a clash between Murakami of the Suzumari First and Kitazoe of the Kageura Corps, followed by a fierce indoor battle as Kageura, the captain of the Kageura Corps, and Raima, the captain of the Suzumari First, join forces!