It was a different princess story because most princess stories are about people trying to save the princess like Tsubasa for egsample.
The first few episodes just captivated me I had to buy the whole series to watch it over and over again.
I watched the whole series but I still couldnt understand the finer details but now I think I get it.
To put it in words all us fans can understand is that.
Their world was modern like us but the peacemakers and Celia mauser sealed the human race into a small section of the world and sent them back to the middle ages but before this happened the humans sent the genes into the sealed world so Shannon, Raaquelle,Pacifica and all the people with the guardian gene could be born.
I hope it sums things up a bit more simply
P.S thanks for reading