World Trigger 2nd Season Episode-01
ワールドトリガー
One day in Mikado City, a gateway appears, creating a portal to an alien world. The aliens, known as Neighbors, attack the city. Mankind fights back by creating an organization called Border. Members of this organization possess weapons known as Triggers to fend off the alien threat. Four years after the first Neighbor attack, a transfer student, Yuuma Kuga, befriends Osamu Mikumo. However, things get complicated when a Neighbor ambushes the pair. Mikumo tries to deal with the Neighbor with his Trigger, but Kuga ends up fending off the Neighbor himself. After Kuga’s encounter with the Neighbor, he is invited to join Border.
In the second season, the story begins from the moment members of Galopoula began attacking Border Headquarters, which means B-ranked battles!