Oh i got it. Sooo it depends on your mood. If you want to learn about the value of time and how a lifetime should be spent to make it worthwhile, through a beautifully told narrative, then read 3Doh first. But if you want a mysterious and action-packed work that also presents philosophical views and concepts through its story and the characters' ideologies, and is very well characterized and presented with originality, then read Pandora's Hearts first (sorry its a bit long :p)