Nagisa is the secondary heroine, and the fourteen year-old partner of Iczer-3. She lives on a lunar colony with her best friend Kawai Shizuka, and works part-time at a fast-food delivery service. When Neos Gold's forces attack, she is at the Moonbase delivering food to the crew of the Queen Fuji (クィーン・フジ號, Kuīn Fuji-gou?). When Fiber takes Kawai hostage, she offers herself instead, and is about to be attacked when Iczer-3 intervenes. From that point on, she becomes a key player in the war against Neos Gold's evil forces. As Iczer-3's partner, she develops a powerful telepathic bond with the gynoid. Shortly after, she also begins to frequently experience strange dreams. These dreams are in fact a flashback to the Iczer-1 OVA, revealing that she is the granddaughter of Iczer-1's partner, Nagisa Kan�. Like her grandmother before her, Nagisa's emotional state is the key to powering Iczer Robo in battle, though it is later revealed that Iczelio Energy (イクセリオ・エ�ルギー, Ikuserio Enerugī?) is the core power source. She also acts as Iczer-3's guardian while she is on Earth, and when Iczer-1 arrives on Earth, Nagisa seems to immediately recognize her. Likewise, due to her intimate connection with Nagisa's grandmother, Iczer-1 knows Nagisa very well.