The Kamui Sharingan was supposed to have killed Kakashi in his fight against Pein, and yet he somehow wakes up - within his thirteen-year-old body and without Obito's Sharingan. Stranded in a new but old second life, Hatake Kakashi determines that he will fix what he had broken, so many years ago, all while he fears that a broken man can only continue to break, not fix. (A03 fic)