Plot
Set in 1969, Tokyo. Earth is under the attack by secret creatures known as the Invaders. The only thing, stopping them from controlling the world is A.E.G.I.S, a group of gifted gatekeepers.
Where to watch Gate Keepers 21?
Gate Keepers 21 is an animation show featuring Chinami Nishimura.
Gate Keepers 21 is currently streaming on Amazon Prime Video.
It is also possible to buy Gate Keepers 21 on Amazon Video.