Black

Black is the story of a grim reaper who is forced to track down his fugitive partner. In the process, he uncovers the truth about a series of cold case murders from 20 years ago. Investigating the murders complicates the reaper's primary role of guiding the deceased to their respective afterlife, especially after he falls in love with a mortal woman - which leads him to break supernatural rules against involvement in human affairs. [About:] Black is a 2017 fantasy-thriller South Korean television series starring Song Seung-heon, Go Ara, Lee El and Kim Dong-jun. It aired on OCN from October 14 to December 10, 2017 on Saturdays and Sundays at 22:20 (KST) time slot. [Source: Wikipedia]