Turning Time

After the War, Harry travels back in time in disguise to the Marauders' Era to get closure and improve Snape's life. How dramatically will Harry change the lives of the Marauders, Lily, and Severus? Should he reverse the deaths, mistakes, and heartbreaks of the past, or let them be? [Some Severus x Lily, Harry- and Severus-centric, Time Travel] Fic cover features Snape.