There are 3 endings in total towards Creation, Destruction or Neutral for each character, 6 in total. It is determined by how the Holy Vessel tilts at the end of Phase 7. You'll see which way the Vessel tilts at the end of each Phase, until the final one.
After that, you can unlock a New Game after one story, in either normal or hard mode.
Ending (Creation) http://hexyzforce.wikia.com/wiki/Ending_(Creation)