
No. of Episodes:73 episodes
Aired:Oct. 5, 2014 - Apr. 3, 2016
One day, a gate to another world opened in Mikado city. Invaders from another dimension, Neighbors, overran the area around the gate, leaving the city gripped by fear. However, a mysterious group suddenly appeared and repelled the Neighbors. This Border Defense Agency build an enormous base and prepare a defensive system against the Neighbors. It's been four years since then.
©Daisuke Ashihara/Shueisha, Toei Animation