Season 1

Ayane Isuzu destroys some Invaders, and collects the crystals they leave behind. While looking for more Invaders, she sees a girl fly across the sky. After school the next day, Ayane meets with a mysterious man who tell…

Ayane and Miu are chasing after a truck under control of the Invaders. Ayane manages to throw off the police that were following, and then tells Miu to fly over to the truck. Miu almost succeeds, but hits a highway sign…

Miu's school friends notice that Miu seems distant depressed. Miu's friends decide to take her to a karaoke lounge to try to cheer her up. They are in a singing room when an interruption occurs in the form of a power ou…

A new Gate Keeper, Satoka Tachikawa, has appeared. She destroys Invaders to collect their crystal remnants for money. Ayane and Miu are outside of school when Satoka confronts them. She attempts to get Ayane to answer a…

Miu's decides to visit Reiji at his headquarters, where they talk more about the Invaders, and Ayame.

The Gatekeepers face their final confrontation against the Invaders.