Y/n is Tom and Bill kaulitzs younger sister. Its 2004. Y/n had to change her last name to protect herself. Y/n had just come out of the audience from watching the concert. She was walking outside until a strong hand grabs her wrist. After all the crowds had gone, she turns around and sees her really abusive ex there. He goes and punches her and abuses her, the only words she manages are " River Light", screaming them - "river light" is the codeword that Y/n uses if she needs help and Tom and Bill know this. Tom and Bill, who are in an interview, hear this and excuse themselves, running outside to help y/n. Y/n has PTSD. Y/n frequently has nightmares. Tom and Bill call y/n "baby" a lot and hope her and kiss her head.