After surviving his life up to his eighteenth birthday, Harry wasn't really surprised when he got a letter that told him his biological father was Tony Stark. Exasperated? Absolutely. Surprised? Not so much. He had stopped thinking anything was too crazy to happen to him around the time he fought a fifty feet long Basilisk obeying a memory from a diary with an old hat and a sword. As a fucking twelve year old. Already on the search for himself outside of the boy who lived twice, Harry decides to visit his biological father. Tony thought after meeting literal gods, fighting against invading Aliens and flying a Nuke through a wormhole into space that nothing could shock him anymore. He is, of course, wrong. Trying to house the Avengers is anything but a piece of cake, especially while ignoring his crush on Captain America of all people. But nothing tops finding out that he has a son. A son he didn't know about. A son that has the same look in his startling green eyes that Tony recognizes from his own reflection. Tony has no idea if he can be a father, especially to someone who looks so lost but he will die trying, that's for sure. This story belongs to QueenOfALotOfDifferentWorlds