Yes, the story can be enjoyed without looking too deeply into the actions of the characters or the plot itself. But why limit yourself? Get deep. Question everything. Why has Derexen changed so much from the beginning to now? What has been the key factors that have been shaping the main players of this story? Is there more to the Empyrean blades and the dream sequence that comes with it? Question everything. Be suspicious! Be a skeptic! Be critical! You're gonna love it.
I mean, what isn't questionable about their journey?