That actually looks pretty fabulous. I don't have a 3DS, unfortunately, but I'll certainly be keeping my eye on this in case I pick one up at some point. Very curious about who the composer is, too. I'm liking the music a lot.
I don't know if there are translations of the trailer floating around already, but I knocked one together myself for fun in case anyone was interested:
It all began with a great chasm that split the earth without warning.
Countless horrors came forth from its belly, and our world was quickly overrun. Soon, most of our towns and cities were little more than empty shells.
Even the Crystals, which had once bestowed their light upon the people, fell to the powers of darkness.
Our world of Luxendalk now advances toward its own destruction.
Slowly, yet steadily...
There is but one way to clear the deep, cloying darkness which envelops our world.
And it is said to lie in the hands of we Priestesses of the Crystals.
But can it really be so simple?
Our duty is so great... I fear it may be beyond us.
Someone... Anyone... Please lend us your power!
I'll never forget that day. The day I met you.
My light of hope. My Warrior of Light.