Again, major spoiler alert! Don't read if you haven't seen Endgame

There was something he had to do, something he couldn't remember. Tony Stark looked with a blank stare as he gripped the arms of the wheelchair he had been forced into. People were speaking around him but to Tony the voice sounded like nothing but muffled noises.

"Tony" Steve said, the few remaining Avengers looked toward the emaciated form of the billionaire. "Tony?" It appeared he hadn't been listening to any of their words.

Stark blinked twice, then shook his head confused. "Sorry, what's the date?" He asked. It was a most basic question and yet it brought worried stares. Half the world was gone and this was Tony's number one concern.

"What?" Natasha asked, her and Steve shared a look. Ever since his many days stranded in space he had been almost out of it, not surprising seeing as he had almost died of starvation and dehydration.

"FRIDAY, what is the date?" Tony repeated this time louder and clearer, addressing the question to his A.I.

"The date is August 10th 2018" FRIDAY answered.

Tony immediately grabbed the IV line inserted in his arm and pulled on the tape holding the needle in place.

"Hey! What're you doing?" Steve asked. He moved to hold Tony down but the needle was already out, leaving blood spattered on the arm of the wheelchair.

Stark moved to push himself into a standing position, nearly collapsing in the process. Thor, who had been sitting on the side quickly rushed to Tony, trying to steady him.

"You need to sit, Tony you're in no way fit to be walking around" Steve said.

"I need a candle" Tony said, not paying attention to people trying to stop him from walking. "And a match" he snapped his fingers. Then he fainted.

"What the hell what that about?" Steve asked. Tony's unconscious form now lay sprawled on a hospital like bed, an IV reinserted into his arm.

"Honestly I think he was just delirious" Nat said. She looked from Tony on the bed to Thor who had returned to his sitting position on the side.

Steve shook his head. "That's not it. FRIDAY?"

"Yes, Mr. Rogers?"

"August 10th" he said. "What's so special about August 10th?"

There was a second of silence before she spoke. "August 10th is Peter Parker's birthday".

Natasha instantly felt sick. Steve looked like wanted to punch something, or someone for that matter. Thanos wiped out half of the world's population, it was hard thinking that the youngest Avenger had been one of his victims.

"He would've been 17 today" A quiet voice muttered. Tony Stark was awake, staring at the ceiling before looking to Steve.

"I was going to surprise him" Stark said trying his best to keep his emotions at bay. "Show up at his school, take him to get his drivers license. Even wanted to get him a car, don't really know how practical that would've been".

Natasha felt her eyes fill with tears. She wasn't normally the emotional type. But she couldn't help herself.

Tony continued. "I didn't want him to come with me. He's a kid" he said.

"Tony this wasn't your fault" Steve started.

"No. It was mine" Thor spoke. He had been listening to what Stark had said.

"You know that's not true-"

"I had a chance!" Thor yelled, standing with his fist clenched, shaking. "I had a chance, to go for his damn head. And I didn't take it! I didn't take it" He repeated the last line, quieter than before.

"Thor-" Nat began.

The Asgardian wasn't listening. "I'm so sorry Tony" he said before storming off.

So i think this story will mostly be split between from Tony's perspective during the five years and then Peter's after his death. Hope you guys enjoy!