Basic info about systems and stuff if I fail to do it properly within the story organically or forget to do it.
Magic is a broad subject and can do a lot of things, it is limited by how many subjects someone can use. That being 2 or 3 at the most.
The schools of magic are Abjuration, Conjuration, Divination, Enchantment, Evocation, Illusion, Necromancy and Transmutation.
Aura is similar to inner power or spiritual power, which is commonly used to enhance physical ability or to suppress weaker opponents without actually fighting them.
Aura can be increased by training intensely, surviving a life and death battle(not too common to actually increase it) and with bloodline evolutions.
Bloodlines provide unique traits not made with magic or aura and can manifest in useful or non-useful ways like becoming an attack and effects or having your hair grow out or your eyes change colour. A bloodline is normally based on some sort of animal mythical or non-mythical, and some beings are way better than others, but that doesn't mean they cannot evolve into something else with enough time and the right items or experiences.
The werewolf system
This system has just been made on the spot and has not been tested or expanded on so it is very bare bones currently, it will be evolved/ upgraded later on and will give better descriptions at a later date.
The white fox's bloodline
This bloodline is special because of the uniqueness of its originator. Being a true demon hunter she can consume demonic souls for power.
What she didn't say tho was that it also grants a curse to anyone who bears this bloodline, making it so they will gain pitch black sclera