{Spoilers probably to save you from watching this}
Okay, so straight off the bat I wouldn't say it's bad. In fact I'd say there are some good parts to it. Like it shows a more gradual development of romantic feelings, I imagine that in the manga it's even more drawn out, and it portrays a different sort of love story. While the whole height difference thing has been covered by Lovely Complex I can't help but appreciate any new take on the romantic dynamic. There's already so many stories about the run of the mill tall, dark, and handsome man and docile, beautiful, pure woman. It's been done countless times. What makes this spin a bit different is the age gap, with Livius being a child and Nike being a teenager. So hats off to you creators who decided to have a new spin on the classic shoujo/fantasy genre. Additionally I really enjoyed the singing. Every time Nike would break out into her rain song I'd sing along ~It's a tender raiiiiiiiin~. Man, Maeda Rena has vocals. Or at least it was a really catchy song. I'd say at least watch the Youtube video of it so you get what I'm talking about. The OP and ED were okay, but the Tender Rain song was the best one.
However, I do have some problems with this. Although it was a more gradual development of feelings than some of the other anime I've watched, logically it doesn't make sense for Livius to just kiss Nike whenever. I get it, it's kind of a territorial thing or whatever, but at the same time he's actually like 10 or something. Most kids do think about war games and such, but I doubt they think at such a romantic level. You could argue otherwise by saying he's been influenced by his womanizing uncle or the three elders with whom he takes council, but I still find it rather disturbing for a child to act in such a way. Also can we just take a moment to analyze his relationship with Sheila? Because at times I got some Oedipus Rex like overly caring motherly love. I suppose if my mom was treated like a trashy concubine I'd also be pretty protective, but sometimes his adoration seemed a little...more than necessary. But then again that's just my own interpretation. And it seems like Nike's song soothed his heart from the pain of losing Sheila. If we're going with the logic that he's more like a child that can be soothed by a child's lullaby then this is a passable explanation. However if we're going deeper as to say that through his revenge he became more like an adult, supported by the fact that everyone around him thinks that he is wise and lacks childish innocence, then it doesn't really make sense for her singing her rain song twice to really give him a full 360 degrees change of heart and forget all about Sheila. Of course this could've also been done to give more emphasis on the changing dynamic between Livius and Nike as they come to actually love each other, Livius because Nike soothed his heart and Nike because...he's a sweet kid? I could see this being more as sibling love until it gets a bit more suggestive in the last episode. (Am I over-analyzing this show that's supposed to be simple? Maybe.)
Speaking of Nike's singing, can we just talk about how her rain song is suppose to be more sacred? It's actually a sacred ritual and she's like "Sorry, I can't use this for parties and whatever" but the second it becomes political she's like "Well, gotta satisfy the hubby." Excuse me? You're an independent woman right up until your husband needs you to do something for him? I don't think so. This logic truly doesn't make sense to me at all. Nike in general infuriates me because at the beginning she seemed like such a free spirit. Both Livius and Kitora said that she was like freedom itself and they were scared she would fly away and never return. So for her to be so independent at the beginning, running off her ship without anyone she knew and without knowing anything about the country she comes off as a bit reckless and happy-go-lucky. And then her character kind of fluctuates. Sure she still fights back but then she's like "Huh, maybe I should help this little boy out." Maybe her motivations and inner thoughts are revealed more in the manga, but the anime by itself was not as comprehensive or in depth about her internal thought process as I would've liked. Am I asking too much for a strong female lead? Maybe. I mean this was produced in 2014. Speaking of the stereotypical female lead, even if you give her some unspeakable power that's just an easy out for making her the most special. It's nothing to really talk about. Especially when you don't elaborate. Again there are probably some holes from the manga, but still. I'd like to watch and understand her power and why exactly she doesn't use it and how if she was this powerful why she wasn't a child prodigy at rain summoning? How does it make sense for the most powerful rain summoner to suddenly get the power to wreck three countries? Magic? A highly convenient and unsatisfying answer.
And I didn't even get into Nike's family. It's a mess. But I guess it was all satisfied in the end by the fact that they did it out of sub-ordinance to the grandmother and out of love for Nike. It was all solved anyways by the fact that the grandmother sent them off with farewell rain. This was also lightweight a side arc just to further the romance.
All in all I'd say that this isn't worth your time watching unless you've already read the manga and just want some colored, motion visuals to go along with the story line and background you already have in your head. If you choose to pick this up otherwise you might find some discrepancies and some dissatisfaction with this anime if you couldn't already tell with my review. Sorry for my angry rant, I tried to cut it short...didn't really work.
The narration voice was strangely soothing.
Shouldn't it be "good of the world"? Because, ya know, he's king of the world. He conquered everything.
Me when someone compliments me
...abuse of power?
Awh...but also, abuse of power?
I don't know what this is but I love it
The best fan service
This was better than the actual romantic stuff
Why is she not dead?? She made it rain at the hurricane level for like an hour
Roast!!!
The side characters are better than the mains tbh
This is pretty cute you gotta admit
Bromance in the air
This just makes me angry. This codependency is so unhealthy.
Lastly, I just wanna say, the side characters are better than the mains.