Iczelion, the final installment of the Icz series, diverges from the preceding storyline in most respects. Across the galaxy, two villains, Cross and Chaos, destroy and pillage everything in their path. They are preparing to invade their next target: Earth. The sole defense against these warriors consists of the Iczelions, a fusion of young girls and Iczels, which are sentient body armor. Nagisa is an ordinary high school girl who is set to become the next Iczelion against her will, tasked with defending the planet and saving the human race! But she intends to have the last word on that...