The CGI is done by the same person who did the CGI for HDL.
Strong Female Leads
Ghosts, Horror, Supernatural Tags
At First, Both male leads dont believe in spirits, Yeo Jin Goo is a ghost seeing male lead as Jung Yong Hwa is a psychic.
Kang Hong Suk is a supporting role in both, in HDL, he is a grim reaper, while in SYHH, he is the chief and male lead's bestie