![Gunparade March](https://image.tmdb.org/t/p/w342/1FTw8b8HOc6aIM28ZqyvNjXLBDV.jpg)
1 Season
12 Episode
Gunparade March - Season 1 Episode 1 The Visitor
A "Brain" is discovered in a region of Japan and an disposal mission is ordered. It ended in a huge massacre. A new elite unit is then called to deal with this threat. It's the unit "5121", consisting of young men and women. A new mysterious rookie also happens to lend a helping hand.