Well after this series has ended I can see some weakness and the reason why it's just 7/10.
It CAN be 8/10 or more if this happens.
-It has around 16-18 episodes. Since because it rushing a lot Deen studio couldn't fill out more of how the fight is or to how the world is in right now. Plus to the story for each important character was left out.
-It has this chance to point out why everyone still follows Yuki even after all her mistake. Like they can point out the reason why they still follow her. Like Harold and Izana is the very reason why they
still follow her. You may not know but it's actually a common thing people will hype up to follow their hero more. Plus to how she shows her kindness actually is one of the factors but with limited episodes, those got left out.
-Obviously yes some can only be left out for those who will think a lot for what happens too during each part of the story due to this limited episodes.
-Try to make us care for Stella more and make it like she isn't just doing bad things for just being bad. It's like they only show that part for 10% if the series which is really bad for "double main character" series.
-The ending is OK but it can be better. Good ending many good series would do I will say an ending after all conflict should be at least 1-3 episodes. Not just a few minutes.
Made it so at that length next time.
You doing great right now with the idea with there's the thing you did.
-Made it so Yuki isn't like wtf somehow she abnormally hype up after seeing someone who cares for her since she was born. That's kinda inhuman... But yeah due to that mistake it also made her look like a crying baby and everyone follow her.
-Make us think that the empire just being bad but actually many reasons like it was to get their resource which they were so desperate and to end all charas. Since they already fail their experiment and to how the corruption within the Kingdom lead to all this mess by killing the messenger.
-Also to how the robot fight was also great. Not just senseless EXPLOOOOOSION! But also just disable and sit still.
-The animation is also quite decent.
-The character gotta says even if they have been shown to us in a few episodes. Gotta say they really nail each character pretty good. That's one of the things they did best too.
For story? This anime really isn't that bad at storytelling but the real blame is bad planning. This is like a big project longer than 12 episodes not just something that can cram into just 12 episodes. I already check all the other staff background and gotta say the director of the episode isn't that great as the others are... Most really made a lot of profit with lots of famous series but yeah there's episode director are famous for "Bad episodes set." With a very boring first series and then just decent in the end... So yeah same old people making the same mistake... Well, can't be helped if that's what budget they have... Just 6/10... Not for the story that's bad but the sub-general of it which is "episodes length" is the blame.
As for music? It was quite great and not boring to hear at all. Well 7/10
The art? Gotta say it was just quite decent like most anime. Wasn't exactly unique so 7/10 at best.
Character? A big A+ for the story writer for actually making a very emotional impact for many characters even if they just appear for a few episodes. Including to how realistic they are. Not just "anime power" This is a few shows that do that and I respect that. Don't tell me wrong I also like anime that has an unrealistic character too if they are well written.
Well even with all those mistakes it's actually a fun ride for me since I actually ace history class and even ace military class section... So those missing story is quite a fun thing for me to notice and made a theory out of them. So for me, it's 8/10
Overall is (6+7+7+10+8)/5 = 7.6
Like I have seen a lot and for sure like many anime with 12 episodes. THIS limitation that made many series being the worst isn't the first time. Actually countless too... Don't worry it's still good but just won't be the same as most anime that goes by anime logic. This will remain to go by how it should be going.