Prepects.
Some say they’re the Messengers of Heaven, others that they are the Harbingers of Hell.
But all agree that when they arrive, it foreshadows the coming of a Reckoning. For the higher powers do not like it when their world is messed with. Basically precepts are The precepts are essentialy beings that appear as warnings from Magic/ Gods that humans are seriously fucking up. They are also hella powerful, and exempt from magical laws.
There are 8 major ones, in 4 pairs: Pain/Pleasure, Hope/Despair, Loss/Gain and Order/ Chaos.
Harry is the reincarnation of the Precept of pain, while Fleur is the precept of Pleasure.
They’re slowly awakening their powers and memories, and the more they use their power, the faster they awaken. This will eventually ramp up to really powerful characters, but the enemies they face will also be much, much stronger.