| Genres: | Sci-Fi, Action, Adventure |
|---|
One day, a gate to another world opened in Mikado City. Invaders from another dimension, referred to thereafter as 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 independently researches Neighbor technology and fights to protect this world.
In a short time, they...
