Iczelion, the final entry in the "Icz" series, is a departure from the previous storyline in most resepcts.
Throughout the galaxy, two villians destory and pillage anything in their path. Their names are Cross and Chaos, and they are ready to invade their next target: Earth. The only defense against these warriors are the Iczelions, a fusion of young girls, and Iczels, sentient body armor. Nagisa is a typical high school girl who is about to become the next Iczelion against her will, to defend the planet and save the human race! But not if she has anything to say about it...
There isn't much to say about Iczelion. This will probably be hit or miss with most people. Personally, Hirano's character designs are some of my favorites and I am a sucker for hot blooded, fun mecha shows with women as the protagonists. "Fight!! Iczer 1" is one of my favorite anime, and I had fun with this alternate take on that story.
The powered armors in this series are all really cool - and give off a kind of Super Sentai vibe to me. The fight choreography is very good and the visual direction in general is stylish and effective. The antagonists looked pretty goofy, but
I thought that they suited the tone of the series well. The art was not amazing for an OVA, but it was still quite good. The music was good as well. There is nothing interesting going on with characters and plot, but there is nothing bad about what is being done there either. Developing those features simply were not the point with this title. The girls have a bit of personality, but there are no real character arcs save the 'mc', and she also had a funny quirk that made the battles even more entertaining in a goofy fun way. The show ends without resolving the plot, I assume that it was canceled.
I suspect that this mainly appeals to a small niche, but if you loved any of the other Iczer anime, Hirano's character designs, enjoy watching 90s anime girls fighting in powered armor, and just want to have fun for an hour, you could do much worse than Iczelion. If the premise, anime that is just meant to be fun instead of deep, and art style, does'nt appeal to you then there is very little here for you, and it would be best to skip it.