World Trigger

In World Trigger, a Japanese manga series that ran from 2014 to 2022, Earth is under constant threat from interdimensional invaders known as Neighbors. The story centers on a young boy named Yūma Kuga, who mysteriously arrives in the border city of Mikado, and his involvement with the Border Defense Agency, an organization of elite fighters who use powerful "Triggers" to repel the attacks. Published by Kazé in France, the series is best known for its intricate tactical battles and large ensemble cast, created by writer and artist Daisuke Ashihara. Its strategic, team-based combat and slow-burn worldbuilding have made it a standout among modern shonen manga.