I need help finding this Taekook prison fic

Please please help me find this fic again. Jungkook goes to jail for the murder of his girlfriend but he’s innocent. He was found guilty because he visited her before it happened. He is friends with jimin and they work together in the cafeteria. Jungkook is being assaulted and Taehyung is the only one in the cafeteria with them. he stops them from doing anything and ends up giving jungkook a choker to let everyone know he is Taehyung’s property.