Originally written as "Seeing Off Love" and sung by Esther of Little Tigers, it was later rearranged with new lyrics and sung by Im Jae Bum, with the new title 너를 위해/Neo Reul Wi Hae or For You. I remember seeing a fancam of Hwanhee singing this song during Fly To The Sky's first fan meeting years ago and then some years later, he performed this song again a few weeks before he chopped his hair off and went to serve his country for 2 years. I converted this to mp3 from a youtube video, here is the link to that awesome live performance with english subs.
https://www.youtube.com/watch?v=VnDUWZ6zRBA

~~Hwanhee - For You (너를 위해/Neo Reul Wi Hae)-English Trans~~ credit: misstellittome@livejournal

We probably, with a complicated fate
have an entangled love with each other
everyday I, as much as i can't pay you back
increase my debt to you.
Like lovers, otherwise like strangers
Is it okay if we keep living like this?
Even with as many wrongs and
frequent separations, you are always there.
I know that you are the only person in the world
that will make me live life right.
If i want to go on living without regrets
I probably have to hold on to you, but..
with my rough thoughts and the insecure light in my eyes and
the you that has to keep watch over this
that is probably a war-like love
because i'm dangerous, because I love you
I'm going to depart from you.

You are the only person in the world 
that will help me live life right.
if i want to go on living without regrets
I probably have to hold onto you, but
with my rough thoughts and the insecure light in my eyes and
the you that has to keep watch over this
that is probably a war-like love
because i'm dangerous, because i love you
i'm going to depart from you.
for you, i'm going to leave.


Hwanhee - For You (너를 위해/Neo Reul Wi Hae)

黃安