First listened to this song years ago, I think it was during my uni years back in Aus. Didn't understand a word, didn't bother looking for English translation of the Hangul lyrics either... until tonight.
I always felt and believed that it was a sad, sad song about parting or losing someone you love, and tonight, well... my thoughts confirmed: it is apparently a song about euthanasia (?). Or someone who is dying (?)
Boy, this singer really knows how to sing and express the lyrics' feelings, the sadness and love and grief and everything in his voice. Simply amazing...