Light Novel Gate Keepers 1985 (-C0193) tells the story of the 15 years leading up to Gate Keepers 21. See also Gate Keepers 21, the six episode OVA sequel. References External links Fiction set in 1969 Video games set in 1969 1999 manga 1999 video games 20th-century Japanese novels 2000 anime television series debuts Adventure anime and manga Alien invasions in fiction Alien invasions in video games Alternate history video games Anime television series based on video games Comedy anime and manga Fantasy anime and manga Geneon USA Gonzo (company) High school-themed video games Japan-exclusive video games Japan in fiction Kadokawa Dwango franchises Kadokawa Shoten manga Manga based on video games PlayStation (console) games PlayStation (console)-only games Science fiction anime and manga Shōnen manga Tactical role-playing video games Tokyopop titles Wowow original programming Video games developed in Japan Video games set in Japan Video games scored by Kohei Tanaka Alternate history anime and manga Entertainment Software Publishing games