Why do i sense some tragedy..? Hear me out, Jaeshin's mom was also a human and she died in the end. His dad being the king of he**, the most powerful ghost to exist, still couldn't stop her from dying. And she being a pure heart like Lee Nok, was able to cross the river and born again without any past memories. I expect the author to come up with really good twist if this is not gonna repeat in our MC's case.