Gate Keepers 21 Facts, FAQ & Common Questions
2002 · Broadcaster archive · Status: Ended · Rated: TV-PG
Frequently Asked Questions About Gate Keepers 21
Direct, verified answers to the most common queries regarding episodes, renewals, watch order, and streaming availability.
How many seasons and episodes does Gate Keepers 21 have?
Gate Keepers 21 has 1 season and 6 total episodes, spanning from its premiere on April 24, 2002 to January 8, 2003.
Is Gate Keepers 21 renewed, ended, or canceled?
Gate Keepers 21 has concluded its run and is officially ended.
How long does it take to binge watch Gate Keepers 21?
It takes 2h 36m (156 minutes) to watch the complete run of Gate Keepers 21. At a standard pace of 2 hours per day, you will finish the entire series in approximately 2 days. Yes! At 2.6 hours total, you can comfortably finish this in a single weekend with about 1.3 hours per day.
Where can you stream or watch Gate Keepers 21?
Gate Keepers 21 is available for streaming on U-NEXT, Anime Times Amazon Channel, dAnime Amazon Channel, Amazon Video. Availability may vary by regional territory, subscription tier, and digital purchase availability.
What is the official age rating for Gate Keepers 21?
Gate Keepers 21 has an official content rating of TV-PG.
Who are the lead actors in Gate Keepers 21?
The primary ensemble cast includes Ikue Otani as Ayane Isuzu (voice) (age 61), Yukiko Hanioka as Miu Manazuru (voice) (age 54), Tomokazu Seki as Nazo / Reiji Kageyama (voice) (age 54), Mamiko Noto as Ghost Girl (voice) (age 46).
Ensemble Cast & Current Ages
Lead cast members, their character identities, and current ages calculated from official biographical records:
| Actor | Character | Current Age |
|---|---|---|
| Ikue Otani | Ayane Isuzu (voice) | 61 |
| Yukiko Hanioka | Miu Manazuru (voice) | 54 |
| Tomokazu Seki | Nazo / Reiji Kageyama (voice) | 54 |
| Mamiko Noto | Ghost Girl (voice) | 46 |
| Sakura Nogawa | Satoka Tachikawa (voice) | 48 |
| Masami Suzuki | Yukino Houjo (voice) | 54 |
| Chinami Nishimura | Chinami Watanabe (voice) | 55 |
| Naoko Takano | Naoko Itou (voice) | 58 |
Editorial Verification & Sources
All production facts, air dates, cast credentials, and streaming metadata for Gate Keepers 21 are compiled from official broadcaster archives, TMDB, and Wikidata records. Last verified on September 25, 2026.