The story, because it is still in it's beginning stages, seems pretty basic, but it holds much promise, and it seems like there are many secrets to be revealed, like the story behind Troy, and the individual histories of all of the characters.
Speaking of characters! Kiri, our protagonist is extremely likable, and though he seems like our typical shounen hero, there is still much to be found out about him. Elraine is also a very enjoyable character, and Sui, Fallen, Kiri's parents, and others come together to make a great cast.
Overall, it seems like Double Arts will be a fun ride.