From my analysis from all the murim manhwas I have read so far , Cheonmas said to have the power to control space and time and that could be the reason for his regression??
He is sent him back so that he can become strong and challange him. He looked quite bored. So, he just wants a very challenging opponent or somebody to kill him. As he does not want to live as he seems immortal.
Peakaboo
From my analysis from all the murim manhwas I have read so far , Cheonmas said to have the power to control space and time and that could be the reason for his regression??
foofoo3344
I am guessing that the Demonic Cult leader is a time regressor who has time regressed in the previous timeline
TwilightatDusk
He is sent him back so that he can become strong and challange him. He looked quite bored. So, he just wants a very challenging opponent or somebody to kill him. As he does not want to live as he seems immortal.