The professor is dead? Severus Snape, who had been protecting him, was dead! Harry thought he was just an idiot, a stupid and arrogant Gryffindor. It would be great if the professor was still alive, at least he could apologize to him personally. Rather than facing the cold tombstone and regretting it! "What if you were allowed to go to the past? This time, your future with him will be rewritten by you!" This is a story about Harry going back to the past, rewriting his future with the professor, determined to protect the professor, and being eaten up by the professor at the same time. The author writes for the first time.