C1963 Tian Kun
Qi Tianyi didn't dare imagine what he would be like after he transformed into Demonic Slave. If he killed his own family, then even if he died, he wouldn't forgive himself, so he couldn't be turned into Demonic Slave.
In the end, Qi Tianyi decided that he couldn't get caught. He had to stop all this from happening, but the only way was for him to use the Power of The Soul