I have this song stuck in my head and I am trying desperately to remember the name of it/who sings it but am having difficulty and don't remember enough of the lyrics to identify it. It's a ballad, and it's not recent. I don't think it's an ost but it might be, I don't remember. I do know that I have heard it used in various variety shows and the like so it's well-known. I keep thinking that it's by Noel, or maybe SG Wannabe, though it could be a solo male artist but in my memory I feel like it's a group.

Anyway, the most identifiable part that I can remember is that the climax of the song builds up with "hajima hajima hajimaaaaaaa" and then the various lyrics I remember from there are................... cheoreom saranghanda......................andwae ohhh.............and apparently I'm terrible at this, sorry. Anyway, is any of that ringing any bells with anyone? Thanks in advance, and sorry for my terrible explanation!

Maybe it's this one? https://www.youtube.com/watch?v=FUWFclMC7Xw
Or maybe this one...
https://www.youtube.com/watch?v=RXyh4U25M4s
https://vimeo.com/18693088
I don't think that it's this one, but since you said something about SG Wannabe (the title of this song means hajima)
Hmmm, no none of those are it, thanks though! I do love that third song though, the vocals are amazing. 

The song I'm looking for is more of a classic ballad than the first 2 songs are. I don't think the title is Hajima, it's just that that part is the most identifiable part of the song (and if it helps anyone, the triple hajima part at the climax goes up in a minor scale). Thanks again!
You're sure is not kajima, kajima, kajima?!? :D

https://www.youtube.com/watch?v=DoZ1WseqDcU
Haha, I was going to say it might be kajima instead of hajima, but I forgot! Yes that is definitely the one, thank you so much!