What is it to feel pain? Nam Sun will never find out as he lacks said ability. He doesn't know what his food tastes like, nor does he feel any pain if he is wounded, all that thanks to analgesia. Obsessed with the fact that he can't feel anything he starts voluntarily hurting himself through cuts and other means. But his sad life is about to change when he meets the wonderful Dong Hyeon. But their story is not bound to be a Happily ever after one.
They share the same atmosphere and the plot is very similar in both. Also, in both films the man is a rough gangster-like person and the woman he falls in love with is cheerful despite her fragility or disability.