Fans of the original Gate Keepers and its sequel, Gate Keepers 21, will find a new entry in the franchise with the recently revealed OVA. This new production serves as a prequel, exploring events that occurred prior to the original series' narrative.
The OVA, produced by Gonzo, centers on Ayane Isuzu, a Gate Keeper operating within the diminished A.E.G.I.S. organization. Thirty-two years after the initial defeat of the Invaders, Ayane battles them out of spite, even as she uncovers the return of familiar threats and the emergence of a mysterious ghost girl. The six-episode OVA format suggests a focused narrative that enriches the lore of the Gate Keepers universe without directly continuing the story of the main series.