Guide You Home by JoJoKim. Don't know how I found it, but I am so glad that I did. The story line is compelling, the plot is unique, her writing is excellent. When it got updated today, I screamed. I had a full on fan girl moment. Check it out and please leave feedback. 

http://www.asianfanfics.com/story/view/865266/guide-you-home-yongguk-zelo-jongup-daehyun-daelo