
ok so i'm only confused on why Ley is so freaken evil? what happened?

Ley is not evil. Evil is causing harm with no cause or purpose, nor rhyme nor reason. Ley is also not the boy from the beginning, as his soul is departed. What Ley is, is a consciousness, most likely without a soul like the demons. Ley will die without energy, and so his only source of it would be the being that created him. Yet very little has been revealed of Ley's personality. We have seen him get jealous, in a way, such as when his creator is pining after another, the one he is trying to bring back, Ley burns down the house. Also, in chapter 13, we saw a fair bit of emotion from Ley that does not seem exclusively him hinging to survival through instinct, but rather with emotion which can be seen from his biting words and self harm.
LOL the author is so funny