In Y/n a longtime trainee in JYP has to watch the trainee group she was a part of debut without her. The group which she considers her family finds a way to make her join the group later on, but that would mean her being left out of the group and them having memories that she wasn't a part of. New holes would pierce through the relations with her members, especially with Han Jisung, her best friend with whom she thought she had an unbreakable bond. Han Jisung x fem!Reader