One Day
어느날 (original)
A man, who witnessed his wife's suicide, gradually cures his emotional scars through a fateful encounter with the spirit of a woman in coma...
Starring Kim Nam-gil, Chun Woo-hee, Jung Sun-kyung, Im Hwa-young, Park Hee-von, Yoon Je-moon, Kim Ye-joon, Kim Jung-hyun, Lee Seung-yeon
It's a drama and fantasy movie, and has a rating of 6.5 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from United Kingdom.