The Passing of Time

The problem with being Master of Death is that although Harry can't grow older than 20 but he can still die. He can also end up reincarnated in the past. And that is how he ended up in the 1940s and became best friends with Howard Stark. When Howard asks him on his death bed to take care of his infant son Tony, Harry agrees despite the future complications. SLASH. Pairings undeterm