However, it is her influence that ultimately pushes Shun into making his choice. Seeing Shun as a competitor, Ruriko seeks to prove herself as the superior Gate Keeper by attempting to face this new threat alone. Shun’s convictions are tested when his family is once again endangered by an Invader attack! In his mind, this would mean neglecting his family duties, which Shun believes his deceased father had done. We are briefly introduced to Shun’s past as he struggles with the decision to become a Gate Keeper, which would move him away from home and force him to switch schools. Transcription: " Heiwa no Tameni Tachi Agare!" ( Japanese: 平和のために立ち上がれ!) Ukiya’s anger over the jeopardy to his home causes him to unknowingly open a gate, which he uses to single-handedly defeat the Invader threat. Ukiya’s world drastically changes when his home is endangered in a battle between a group of Invaders and the first Far Eastern Branch recruit, Ruriko Ikusawa. The episode introduces a teenager named Ukiya Shun, who lives with his mother and younger sister Saemi. In an effort to prevent further devastation, the Far Eastern branch is searching for individuals who possess the power to open “gates” also known as “Gate Keepers”. (Alien Exterminating Global Intercept System), has traced their roots to entities known as “Invaders”. A secret organization, known as A.E.G.I.S. As a new era of prosperity begins for this small country, the world at large has seen a rise in unnatural disasters. Transcription: " Chikyuu Bouei wo Kaishi Seiyo!" ( Japanese: 地球防衛を開始せよ!)
In 2007, Geneon USA went out of business and left the series (including the GK21 OVA's) out-of print. In 2004, Geneon re-released the series under the Signature Series label. In 2001, Geneon Entertainment USA (then known as Pioneer) acquired the series and released them in eight volumes on DVD and VHS. The network WOWOW aired the 24 episode series from April 3 to September 8, 2000. The anime series was produced by GONZO and was directed by Koichi Chigira. The game was then adapted into a manga series written by Hiroshi Yamaguchi ( 山口 宏, Yamaguchi Hiroshi) and drawn by Keiji Gotoh. Gate Keepers ( ゲートキーパーズ, Gēto Kīpāzu) is primarily a role-playing video game for the PlayStation.