Shortylynnchaos

Well this anime wasnt one of my fav.... You start off with a male character who is running through an ALL girsl school, falls through the floor, into the bath of our main female. So lets use #2439 trope of anime. Boy falls into girls lap. And he continues to do this trope a million times throughout the anime.... 
In my opinion the harem part was not needed. Yes it added onto the story for this anime, but it could've been just as good as a male and female school where they were trying to see who could save the kingdom, not who could get Lux to fall in love with them the fastest. Then we have to add even more girls on top of the ones hes already got to deal with.
Unessary Harem....

The story was pretty good. They explained everything except for why they have these giant mechs (how do they fly???) and they can appear when you summon them (how???) and they each have a unique ability to help them in battle (Again HOW????) But they are set in a medivial style universe. This makes no sense and bugs the crap out of me. Where is the rest of the development outside of the mechs??? And they can build more mechs and tweak them to how they need to. HOW???? None of that was explained....

The animation was pretty good, I saw it falter a few times but that was mostly during major fight scenes where the most action was taking place.

The sound was good as normal. And I even recognized a few voice actors I knew.

The characters were... Meh. I was more interested in the last female to join the group as she reminded me of Kurokami from Date A Live, so I automatically liked her.
All of the girls (including her) are just about getting Lux to fall in love with them. We have next to no backstory on more than 3-5 characters and half of that even isnt explained... Which is just irritating... 

Overall for the animation and story it was a good anime and I'd watch a second season but not the first again.
One more question. How old are they? Some of them have boobs the size of their heads and best guess I have is that they are 10-15 years old. So I'mma go with "Japan"