Hidden littles- Tony Stark

Rules-9

It was now Tuesday, three days after Peter had taken his new little, Tony Stark to one of the largest little stores in New York city so that he could get him the stuff he needed.
As Peter had promised, Tony, as soon as it had become Monday, wasn't required to be little and could instead be the genius billionaire play-boy everyone knew him as.
Peter had told Tony that since he hadn't been little for a while, he was going to have to be in his headspace for more days each week, but he'd also promised Tony that they wouldn't make that move until the other Avengers knew about him, something that Tony wasn't ready to commit to doing yet.

So unless Tony was feeling really small, he wouldn't be little any other days except Saturday and Sunday, the days the other Avengers were often away.
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Peter was sitting in his spinning chair, facing his working desk that was in his room in the Avengers tower.
In front of him lay a piece of yellow construction paper as well as a cup filled with pens of all colors.
Peter was twisting a blue felt tip pen in his right hand and was focused intently on the words he had written on the paper.
Tony's little rules

While Peter and Tony had been shopping in Lacy's Littles, the store made just for littles, it had occurred to him that Tony, despite being a cute little angel, hadn't yet any actual rules to follow. No rules like, don't run away from me or, always use your manners.
Technically, Tony could still do anything he wanted while in little space because he had no rules to follow.
And despite Peter knowing how innocent and shy Tony was while in headspace, he wanted to be sure his little had the best protection possible.

So as Peter sat at his desk fiddling with his pen, a few ideas came into his mind and he wrote them down.
Peter knew that while he was big, Tony never really ate, and little Tony didn't like to either.
So he wrote his first rule.

1: Always eat the food given to you unless I say you don't have to
Peter also knew how Tony rarely slept and would spend days straight in his lab.
2: Take lunch naps and follow whatever sleeping schedule rules I give to you
3: No going in the lab when little unless there is a reason you should and if I allow it

Peter spent the next hour or two coming up with a full list of rules that he thought would be best for his little.

The list is as follows:

Tony's little rules
-can be altered at any given moment-
1: Always eat the food given to you unless I say you don't have to
2: Take lunch naps and follow whatever sleeping schedule rules I give to you
3: No going in the lab when little unless there is a reason you should and if I allow it
4: No coffee or adult drinks while little
5: 4 hours of technology a day tops, unless I say it's okay
6: If you have an accident, tell me
7: No being Iron Man when little unless it's a life or death situation
8: don't lie or get into trouble
9: If you feel little during the week, let me know immediately
10: Try and be little on the weekends unless there is a valid reason that you can't be
11: clean up your toys when your done with them
12: if we go somewhere, never leave my sight
13: don't fight your headspace
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After a while, Peter set down his pen and glanced at his brand new set of little rules proudly.
He figured that he should show it to Tony so he could check if he agreed with the rules that Peter had made. So, Peter stood up and grabbed the paper of rules, folding it and holding it to his chest as he made his way out of his room and down the hallway to Tony's lab where he knew he would find him.
Peter reached the door and scanned his key card, letting him into the workshop where he then found Bruce and Tony both standing still and silent as they looked at a holographic wall of coding.
Peter walked up to them and stood next to Tony.
"Uh, hello Mr. Stark, Mr.Banner."
They both didn't move.
Peter stayed silent and instead joined the two men in silently staring at the random mix of numbers and letters.
After a minute or two, Peter was going to say something else, but he was interrupted when Tony snapped his fingers and pointed at at random dash mark in the coding.
"That's what's wrong, that's the loophole. That should be a number one, not a dash."
Peter looked confused and Bruce looked impressed.
"Wow Tony, you are good," Bruce spoke admiringly.
Tony smirked.
"I know."

Peter smiled. It was the first time in a while that he had seen Tony share a true smile. Perhaps him finally being able to be little was helping him.
Tony eventually turned to face Peter.
"What's up kid?"
Peter was pulled out of his thoughts.
"Whah- oh..."
Peter turned to face Bruce.
"Mr. Banner? Is it okay if I speak with Mr.Stark alone for a moment?"
Bruce nodded and began making his way to the lab's exit.
"Sure, I was about to leave anyway. And call me Bruce."
Peter smiled again and turned to face Tony who was clearly confused as Bruce left the room.
"Do you need anything?" Tony asked as Peter made his way over to him.
Peter held the folded paper in his hands, fiddling with it as he spoke.
"Well Mr. Stark." Peter looked around the lab to make sure no one else was in the room.
"Since I'm technically your caregiver now, I made some rules, not that you need them, but just to make sure that you listen. Is that okay with you?"
Tony looked at the floor and took a long blink before holding out his hand.
"Well then, let me see the rules first."
Peter smiled and unfolded the piece of yellow paper and handed it to Tony who looked over the list with a blank face.
He looked at the list for a moment more before emotionlessly handing the paper back to Peter.
"Okay..."
Peter stopped smiling.
"Is everything alright Mr.Stark?"
Tony faced Peter and locked eyes with him.
"What about punishments?"
Peter's eyes widened. He realized why Tony was acting so timid about the rules.
"No, no, no. Don't worry Mr. Stark, whatever your old caregiver did to you, I promise will never happen."
Tony still sat facing Peter, but his eyes now showed a little bit of worry.
"Are you sure?" Tony asked quietly making Peter smile softly.
Peter walked over and put his hand on Tony's shoulder, knowing that Tony wouldn't want to regress right now, but still wanting to comfort the little.
"Positive."
Tony seemed to slightly relax.
He sighed.
"Okay...then I agree to the rules, but only when I'm little."
Peter smirked.
"Well then, pleasure doing business with you Mr. Stark."