7.

Steve performed like a perfect nanny afterwards. He brought little Tony to bath, dressed him with a clean checkered pajama, tucked him well and patted Tony's chest until he finally fell asleep. It was raining when Tony woke up, Jarvis said there was a low pressure and it might rain in the following two days.

The approximated time for him to return to normal size was close to the noon. Tony asked Jarvis the time, there was still an hour for him to prepare for it. What he should do was to wake up immediately, look for Bruce and go to the lab with a set of adult clothes, maybe also have a body check. Who knew what would happen to him by then? Collecting the data could help them to improve and modify their experiment.

But Tony just lied on the bed languidly, he didn't want to move even an inch.

"Sir, Dr. Banner is sitting outside, do you want him to come in?" asked Jarvis.

"Let him in," Tony murmured.

A thunder struck when Banner went in, Tony greeted Banner, at the same time worrying was it Thor who called for the thunder causing damages which he had to pay compensation for it.

"Tony, a check in the lab?" Banner kneeled beside the bed, circumambulating. The only thing that made the scientist, who had always been the modest, confident and passionate was research, Tony knew clearly. He also knew he should've gone to the lab, but he was so slothful and he wanted to go nowhere.

Maybe, he wanted to keep the memory of being a kid.

"I don't wanna move," Tony pressed his face against the bed with half-opened eyes: "Carry me there or wait for me to transform."

"I know Steve soothed you to sleep last night," Banner rested his chin in his hand looking so innocent and simple: "He was gentle, right? Did he give you a goodnight kiss? Just like in the television, kissed you on your forehead."

Tony uttered a few meaningless words as a response.

"Sometimes I imagine, if I was the one who turned into a kid, I would have had the chance to have a one-week Steve daddy," Banner smiled, finally decided not to waste any further time. He carefully lifted Tony from the bed: "Captain is a great dad."

"You can perform the 'accident' again, any record 'bout it?" Tony laughed.

"Tripping twice by the same stumbling block is definitely not an action of a good scientist, Tony," Banner was also grinning.

"Oh so what, we're just repeating the experiment to make sure nothing goes wrong."

"Forget about it, Steve wouldn't have time to deal with stuffs other than babysitting, let's save the trouble for mum," Banner cracked a laugh.

"Single parent, what a disaster," Tony lied on Banner's shoulder, having difficulties in pronouncing words properly. Banner chuckled, carrying Tony to the lab.

They both knew what Banner didn't say. Tony had a distant relationship with his father, Banner's father was cruel and violent, none of them enjoyed love from an older man, so when they turned into adults, they didn't know how to express themselves.

Banner's rage towards adult was concretized into Hulk by gamma ray, while Tony wrapped his anger with flippancy and cynicism. However, under their covers, were just two lonely boys, desperate for a hug or a kiss from adults.

"How rare, don't those guys wanna witness my transformation?" there was still ten minutes before his transformation. Tony took off his clothes and threw them aside casually, operating the machines naked. He didn't care about being naked. The clothes, which were delivered by Jarvis, were put aside so he could wear them once he reverts.

"I guess that's because it's rude to surround and observe a naked man," Banner said as he was operating the machines.

"Hmmm, so they think it's polite to surround and observe a naked kid?" Tony hummed. It was about the time so he stood on the table and started the bio-scanner, readied to record the data of the process.

"Yes, observe a naked five-year-old Tony Stark armed," Banner grinned, his right hand was still gliding on the keyboard: "Oh, I even shouted, what a long week."

"Yeah what a long week," the process of reverting to an adult from a kid didn't cause any pain, they wasn't explosion or strange lights. To Banner, as an audience, it was just like fast forwarding the growth of a child. A minute later, five-year-old Tony was gone, thirty something Tony was back.

"Welcome to the adults' world, Tony," Banner stopped operating and clapped: "How do you feel, growing up once again?"

"Hmmm, I guess, I can finally learn from those uncreative people and say," Tony smiled and shook his head while he was dressing up: "Oh, I don't wanna grow up."