Saki is usually a normal 16 years old girl, but she is actually a serious girl that serves the Earth Defense Force as an international civil servant. She is a member of the (rough translation) "International Defense Force Far Eastern Branch 3rd Military District 7th Division 11th Specialized Division Regiment Affiliation 3rd Mobile Guerilla Group" (国際防衛軍極東支部第3方面軍第7師団第11特課連隊所属第3機動遊撃班). During the events of the game, she is busy fighting everyday against a monster uproar in Nijiirochō.