In personal response, this is just about the worst manga I have read. It wasn't awfully terrible per se, but I did find it troubling to finish as the storyline continuously chased itself by repeating and repeating the same idea. As for the main couple, I wouldn't bet on their "love" as it seemed too artificial to surpass realities. :/ I believe they were only 12 or 14? Much too young (for..uh.. _____).
I suppose you could even call it a Sailor Moon knock-off? Same endings to the same battles with mildly different villains.
All-in-all, my opinion of the story resulted in boredom, dissatisfaction and a tad torturing to be dragged through.