(I'm going to do fnaf daycare but I would more or less call this story a parent one. If you want an actual daycare just let me know.Thanks PhoneGuy_XP for the suggestion :))
(I'm going to take some ideas from a story I've read on Fanfiction.net called Father Vincent, I recommend it as it is one of my favourite stories on there so far!)

We all do stuff in our spare time, right? Doesn't even have to be much but we all do. I do something, I experiment with different chemicals to see what new substance I can create!

I've created ones far more dangerous than battery acid. They're beautiful. And their colours are so nice.

Vincent invents, granted he struggles but he invents. He usually watches TV shows to get ideas like he made that... Weird lock picker from Dr Who.

So around May, I was working on some random chemicals and I tested it out on a wooden table that I bought for this, which is covered in holes and even the floor has holes deep in it. I placed the liquid onto the table and it didn't burn through the table.

Since it didn't work I got one of my many rats, I like the little creatures, to test it on. I got one of the oldest I called 'blood'.

She was a white rat that was way too skinny to be healthy, as you know with white rats they have pink eyes, but this one has pure red with what looks like blood dripping down it's little face. It was a style on the fur but I found it awesome. The poor girl was 2 years old and soon to meet her end.

So I carefully placed the rat in the cage and pored the liquid into its drinking water, it was more of the mysterious liquid than water. I stroked the back of the rat to her soft, long tail then called it a day and went to Vincent's house.

My 'lab',I call it, is on the other side of the back garden of Vincent's house. For quite a few years now I have lived with him. He picked me up from the streets before I died so I'm grateful. His house-well, his mansion, was huge. It was strange, it was like a normal house, granted there were a few more rooms than a normal house had but it was the size that's impressive.

The house had a basement, what we had instruments in, a massive kitchen, two living rooms, one was with the TV and games while the other was for relaxing with a pool table inside. 3 bathrooms all huge, one downstairs, the main bathroom and a bathroom that goes off Vincent's room, the baths could fit at least 3 adults comfortably. He has at least 2 spare bedrooms while he has the grand one, I have the second best room which I keep mostly empty. To my request a mini library and a room entirely dedicated to the VR.

Outside are two huge front and back gardens surrounded by purple fences that we painted for the hell of it, at the front it looks smart with trees and a few flowers both wild and planted. At the back is my lab, a huge court for football, a pool and lounge chairs.

Yeah it is a huge place.

So when I walked back to Vincent's place, I saw that he was busy playing The Last Of Us for the 2nd time. Can't blame him it is an awesome game. I leaned against the doorway smiling as I watched him.

Joel, the main character in the game, was busy fighting a hell load of clickers- these fungus zombies that rely on noise to move and find things, I recently found out they are based off the parasite cordyceps fungi- in a school basketball room.

Vincent looked so into it, his little tongue hanging out of the corner of his mouth, his eyes locked while his fingers knew their way around the controller.

When he died in the game the threw his controller at the wall, it broke into a few pieces. He knew I could fix it. He clutched his purple hair annoyed.

I walked to him and softly rapped him in a hug, I kept his head away from my massive breasts, cause when do I trust him? So I put his head on my shoulder, his head nuzzled my neck, into his warm home under my neck. We both do this to each other so I'm used to it, his arms rapped around my waist and held me close. "Calm, Vincent." I told him, he nodded against my neck.

Once he was calm he pulled away and tapped the spot next to him, I sat next to him. "Can tell you've been playing this all day." I said, he chuckled and nodded. I'm quite clingy to my friend for some reason, I rapped my arm around him, resting my head on his chest, his arm rapped around me hand on the top of my furthest arm.
"So how's the scientist been?" He asked me.
"I tested some of my recent creations together. I got one that didn't burn so I tested it on old Blood." I told him, he smiled and nodded.
"We'll see in the morning." He said and I was the one who nodded.

We lied down together on the couch in the living room, I was pressed against the back and he was in front, I rapped my arms around him, my head against his racing heart. His arms around my waist and he damned me by softly massaging my back. He was so good. I ended up falling asleep not long later.

I woke up late morning like usual, I'm a lazy person. And apparently so was Vincent today, he's usually up early. But no he was fast asleep next to me. Typical. I manage to slowly pull away from his embrace, and I stepped around him, he groaned once I was off the couch.

I slowly walked to my lab, taking in the nice spring morning. I went to check on Blood. And it wasn't the old rat I knew.

She was younger....

She had turned to a baby rat.

Over the course of the day, I tested two other rats and the same thing happened to each of them.

I decided to test it on someone.

It turned 12pm and me and Vincent were at our hell of a job.

I managed to give some to Jeremy, fritz, Mike and Scott. When the pizzeria started to close, there were little differences between them. More childish.

Before me and Vincent left, there were 4 kids hidden in huge clothes.

One was a chubby little ginger with bright blue eyes, he looked frightened as he fiddled with his big fingers, he had his hat covering most of his face.
Another was a very small kid, he was hidden in all the clothes, only his amazing blue eyes could be seen, he whimpered as his brown hair covered most of his face and eyes.
One had big brown eyes and was the least covered of the rest, his long brown hair hid in the massive hat as he smiled.
The final one hid his face in the hat so I couldn't see much. But I knew that one had orange tinted eyes with almost black hair.

Great....

"You grab them." I told Vincent. He looked at me shocked.
"Why me?" He asked.
"Because your the guy. So you can." I told him starting to walk off, he picked all 4 up and carried them home.

When we got home, I messed around with clothes to make some that fit the 4 boys. Each one appropriate to what they would wear. All had black pants, jeremy had a green jumper too big for him, Mike had a blue shirt, fritz a baggy shirt and, of course, Scott had the slightly fancier shirt.

"How long does this last for?" Vincent asked, no need to say it but neither of us were good with kids.
"I have no idea..." I admitted, Vincent looked pissed off.
"SO WE HAVE TO TAKE CARE OF THESE GUYS SUPPOSEDLY FOREVER?!" He yelled, causing Jeremy to cry, I picked him up while the others looked around the house. I held the little one close to me, hoping he would calm down.
"Yes pretty much."

Vincent wasn't exactly thrilled and nor were I.

We struggled for quite a while to learn how to actually care for kids. They were very fussy eaters, except for fritz who ate pretty much anything. But I got them down after day 3 of this torture. Jeremy liked sweet things, Mike like sea food and Scott liked anything not messy (which aren't kids meant to like messy food?).

Anyway back to the first night.

"So how are we meant to do this?" Vincent had asked me while I cradled the Jeremy, I nearly snapped when he placed his head on my breast, but then I realised that he was just getting comfy. He's a kid he doesn't know anything like that. No their adult minds were not in their kid bodies, they had kid minds too.

"I don't actually know... Guessing we learn how to take care of them?" I suggested, he nodded and looked at Jeremy.
"He's found his spot." He smirked, I rolled my eyes.
"Quit that.."
"M-mummy?" Jeremy asked scared. I've never blushed so hard in my life...
Mummy? I wasn't their mother.....
"Yes?" I asked
"Y.... Your hearts so f-fast.... Are you ok?" He asked, looking at me.

Great he was going to blow it.
"I'm ok, Jeremy." I promised him and he just rested, I assumed he kept listening to my heart beat.

The other three were all around the house, Scott was messing with my books, fritz had Vincent's secret stash of Japanese candy and Mike was messing with our knives. I was ok with Scott, as long as he didn't rip them, fritz got a told off from Vincent and he shook, then Mike had the knife taken away and he sulked.

You don't know how hard it was to shop for them... We had to get clothes, toys and other little things they needed, all around we spent a fortune on things.

While we had spare rooms, they were not properly furnished so they couldn't sleep there. So when bedtime came around, they had to take our bed so it could fit them all. Jeremy and Mike on one end and fritz and Scott on the other. We stayed with them while the kids slowly fell asleep. "Can we kill them?..." I asked, already tired from everything that day. He looked at me, shocked.

"Of course not violet!" He whisper yelled, "they are our friends!"
"But we have to take care of KIDS! Kids Vincent."
He stood up and took me out with him, quietly closing the door. He gripped me by the top of my muscular arms and made me look at him.
"So what? They're still our friends! And we will have to! We'll get them back to normal. We just have to put up with this, Vi." He told me, I sighed and nodded. "Come on, your tired, let's go to sleep." I nodded and we walked downstairs, I lied on the couch and he lied next to me. We cuddled up to each other while he rapped a blanket around us.
"Night my friend." He told me, I nuzzled into his chest.
"G... Goodnight..." I said and fell asleep.

I don't know what time it was, all I know that it was late since the room was pitched black. I felt shaking, a small hand on my waist and another on Vincent's.
"M-mummy? Daddy?" A little voice asked, his little hands were shaking, we both woke up and I looked at the kid. It was Mike.
Never in my life would I have thought that Mike would be scared. But kid Mike definitely was.
"Daddy?" Vincent asked confused.
"What is it, Mike?" I asked, he actually started to cry.
"I-I'm scared..." He said shakily, I felt something.
Pity....
I actually felt pity for the kid. We had quite a lot of room on the couch. Vincent nodded at me and he got off the couch, Mike in between us.
"Love you mummy... Love you daddy." He said, falling asleep as we cuddle him, our eyes meet and I noticed him blushing.
"Mummy and daddy." He said, I just smile.
"Guessing their minds have changed." I could feel my cheeks heating up but I fell asleep before he could see anything.

Days passed, it turned to weeks. I got nothing. I spent most of my time after that day to try and age the rats. I needed to find it.
I don't know how much more of the kids I could take!

You don't know how scared I was... A day I haven't seen Vincent after he went on night shift...
No one saw him...
After a while, I knew it was the last time I would see him...
I sat on the couch crying, losing my best and only friend. The four kids held me as I held them, I told them...
I told them daddy might not be coming back...
And they broke in tears too...
They wouldn't let me go in fear they'll lose me.

This went on for a few days...
I gave up on the cure for it...
I gave up buying things except food for the kids...
I don't know what happened to Vincent, I looked everywhere... And the kids stayed by my side... They never left me, never hurt me...
They went from 4, to 5 in no time at all...

I felt like a parent... A mother without a father to help...

After a while, I decided to bring them back to their old selves...

I managed to find a cure a few months later and they returned to their old selves. But they kept a hold of me still...

"I'm sorry, Violet..." Scott said, four adults hugging me was a good feeling...

I just wanted Vincent...

They returned to their jobs and I didn't, I stayed at home. I kept praying for him to come back... I wanted to see him again...

Then I died... Inside that rotten suit. But I was still there.

30 years passed and the guards retired or got a new job. But I stayed strong.

I saw him...

I saw him again...

I came out of my suit to show my soul, Vincent was there in front of me.

Souls become the age that they had the best times.

I was 27.
Vincent was 29.

And I saw the guards again.

Their happiest time wasn't their adult hood. They never married.
They never had kids.

They were all the same age.

4...

Despite us being dead, we grew as a family.
Me as the mother.
Vincent as the amazing father.
And fritz, Jeremy, Mike and Scott. As our children

(OK being honest I may change this ending later... Tell me what you think.)