UFO Princess Valkyrie, or UFO Ultramaiden Valkyrie as it has also been called, was a cute anime with surprisingly adult undertones. The story is about a princess from outer space crash landing on earth, where Kazuto is desperately trying to maintain his grandfather's old bath house. Due to a set of circumstances, Kazuto ends up receiving a part of Princess Walkyrie's soul, which is a problem in and of itself. However, to make this issue even more exacerbating, due to the princess losing a piece of her soul, the soul she manages to retain has weakened, and with it, her age has regressed to that of a child.
Yeah. That's right. This story is about a big-breasted woman who transforms into a lol.
The story itself is, actually, surprisingly, good. While certainly not the best I've ever seen, it's not the worst either. That being said, you probably shouldn't take this anime very seriously. It's definitely a Rom-Com anime and therefore not something that you should think too hard about.
The pacing is surprisingly quick. Despite spanning over four seasons, which I would not have expected from an anime like this, the plot moves along at a pretty fast pace. Of course, the plot also tends to get mixed and muddled with fan service and other things, but this is an anime where a little girl transforms into a beautiful woman with large tits. Fan service is kind of expected here.
As is the case with most anime, this one is filled with a combination of slapstick comedy and ecchi humor. There are moments where what you're watching is just so stupid that you can't help but laugh, and other moments where you're laughing thinking "Oh my god. I can't believe that just happened!"
I think the most controversial part about this anime are the transformations. To start, for Princess Walkyrie to transform, Kazuto has to kiss her. Now, I'm not even going to go into how wrong it is to kiss someone who is, for all intents and purposes, a six year old little girl. The transformation itself, while reminiscent of Sailor Moon or any other Mahou Shoujo, is also different in that, unlike all the other transformations out there, this one shoes everything. Literally. There are no sparkles covering her body as she transforms. You see her boobs, including her nipples, as they grow larger and her waste as it flares out. They don't show her, um, cat, yes cat. What else could I be talking about? Anyway, they don't show that to you, but pretty much everything else is on display. Now, as a guy, I can appreciate good nippage, even if it's from a pretty 2D character, but I'm not sure I feel comfortable seeing a six year old's boobs. Which it does show. I don't. Maybe it's just me, but it just feels wrong somehow.
Despite the questionable aspects of the transformation, I will admit that Princess Walkyrie's adult form is quite gorgeous. But that's par for the course with anime girls.
I do enjoy the cast of the series as well. While most of the story centers around Kazuto and Princess Walkyrie and the shenanigans they get up to, there are a crap load of other characters, including seven other princesses, all of whom are vastly different from each other. Fans of pretty magical girls would love this anime simply because there's a type for everyone.
Now, while I enjoyed most of the anime, I will admit that after the second season, the plot really went downhill. While the first two seasons had a clear, defined story, the third and fourth seasons felt more like a series of fan service OVAs. There was no problem that needed to be solved, no real storyline, just episodes about of the Princesses as they go through their lives and get ready for, well, I won't ruin that, but they get ready for something. Of course, the ending of the third season does kind of make up for that. So it's not all bad.
On a grading scale, I think I would have to give this story a 6.5/10. It's a decent anime, the artwork is nice and the story is cute...and there's boobs. It's good if you're looking for a romantic comedy to watch, but it's not one of those memorable anime that will transcend time itself.