Instead of only 7 soul traits, there are 8. Kindness, Bravery, Justice, Patience, Perseverance, Integrity, Determination, and Creation. Though it doesn't make sence, that's a soul trait. In this universe, you can tell wht soul trait a person has by looking at the tips of their hair. 8 humans fell, 8 humans all with different traits. Instead of wanting to steal the human's souls, the monsters want to train these 8 humans to use magic long forgotten among the human race. The history of souls, soul trats, and soul magic is studied around the globe, people wanting the power.