Min SeoYun is someone who had known KyuJong since long before they debuted. When he became a trainee, KyuJong introduced her to the other members and they met quite often ever since. They even became close, like siblings. SeoYun loved them very much that all she wanted was for them to be happy. When something really big came up and broke them, SeoYun sacrificed her all, against the advice of the Winchester boys. Eventually a Kyu x SeoYun fic. Will have a bit of Supernatural things