Protect the Festival of Progress & Harmony For Mankind!

Gate Keepers · Episode 21 · “Protect the Festival of Progress & Harmony For Mankind!”

It is Tokyo, 1969. Earth is under the attack of the "Invaders." Fortunately, though, the public is unaware of this. But to the secret orginazation, A.E.G.I.S., the threat is very real, and it is up them to stop this invasion. One day on his route to high school, Ukiya Shun observes a battle between...