saddest korean drama or movie you ever watched?

For Movies:
Train to Busan
My Annoying Brother
A Werewolf Boy

For Dramas:
Stairway to Heaven
Winter Sonata
Autumn Tale

49 days (destroyed me)
cruel city (swollen eyes)
queen of ambition 
yellow boots 
secret
who are you 2013
empress ki
golden rainbow
the devil (so freaking sad)
the princess man
the master of revenge:god of noodles
shark
marriage contract
that winter the wind blows

movies: 

pained
always you
harmony
man in high heels

Memory