The story of a parallel world.
The Dark Duke won the war. Everyone Harry cared about was killed, and Harry lost the will to live. However, the death curse only took away the soul fragment in his body. What is unusual is that he is not the only one who has returned to the world, but also Salazar Slytherin, who existed thousands of years ago and only existed in history.
Open ending, Harry attacks himself, someone has unrequited love←_←
Intention: