Hello! Can I recommend you a heartbreaking KaiSoo one-shot? The plot is unique and fantastic! The author did an amazing job, and you can literally feel the pain of the characaters! You won't regret reading it ~ The story circles around an orphaned boy, a singer and a legend called 'Three Wishes for a Soul'. 

+ http://www.asianfanfics.com/story/view/729885/

Do subscribe, comment and/or upvote when you do decide to check it out! ^^