Harry Potter: The Name's Constantine...

Getting reincarnated after having cancer all his life, he is determined to make his journey in the magical world of Harry Potter as fun and exciting as possible, that includes tragedies along with ups and downs, by the way, the full experience. What else can be more exciting than becoming a hit-wizard for hire with morals? Oh, did he mention that he was older than the Golden Trio by two years? "Yeah, magic's cool. Sure, it's quite versatile and is more efficient in killing someone. But, you know what? A gun's more satisfying to shoot and kill." Harry Potter X John Wick Inspired OC