"No..there is no way to reverse it."
Beli sat there with her legs crossed as she looked at Max. She hadn't ever heard of a human who had converted into a demon and returned back to being a demon. At least, it was not possible in this case for sure.
People who got converted into a demon would form a Demon heart in their body and their human heart would remain as well. So, in theory, if they destroyed their demon heart then there was a possibility of returning back to human.
But, the experiments had failed until now and no one wanted to try it anymore. After all, once the demon heart was destroyed, the blood pumping through it will pass through the human heart which was not meant to be.
And, in Zack's case, his human heart was destroyed. So, he only had a Demon heart left.
"Well, I think the method is just not found yet to be honest." Naze chimed in after maintaining silence for a long while. This immediately earned him a glare from Beli.