Requested by LadyireneSofia1502
Tysm for your request. I hope that you'll like the requested story...
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One evening:
No one's P.O.V.

"Come on (n/n), stop fussing around so much."

Shu whined wearily as a little (h/c) haired girl stopped in her tracks and placed her hands on her waist before looking at him with an angry pout.

"But I don't want to play with those stupid toys! You're treating me as if I'm a kid! Hmph!"

"Oh? Then what am I supposed to consider a 5 year old as? An adult or a teenager?"

"Hmph!!! A teenager!!!"

She pouted angrily as he just chuckled at her cute face.

"You're really so cute. My baby (n/n)~"

"SHUT UP!!!"

She exclaimed angrily at his teasing as he burst out laughing.
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Author's P.O.V.

Moshi moshi! (⁠｡⁠･⁠ω⁠･⁠｡⁠)⁠ﾉ

I'm here to explain what, how, where and when here! ^w^

Let's get into a little flashback to see what happened exactly.

Flashback:
Early in the morning:

The albino Shu Kurenai had just freshened up and gotten ready to start his day. He was currently on his way to his girlfriend (Y/N)'s room to wake her up.

(I know what you're wondering. (⁠｡-ω-｡⁠) If you and Shu are already in a relationship then why the hell are you not sleeping in the same room? Because you were still very shy around him and didn't want to give up your precious sleeping space of the night yet. And our albino being the nice boyfriend he is, respected your decision.)

As soon as he opened the door to the girl's room and was about to kiss her to wake her up, he was stunned to see a little girl, around 5 years of age, sleeping in HER bed and HER blanket.

At the first glance, the red eyed blader thought that this girl was his girlfriend's child. But he didn't jump to any conclusions yet as he knew she was not that type of person. Maybe this little (h/c) haired girl was her cousin sister or something?

As he was lost in all these thoughts, the sleeping female began to slowly open her (e/c) eyes.

"Hmmmm...."

She groaned sleepily as Shu snapped out of his thoughts and turned to look at her with slightly wide eyes.

The little girl also turned her eyes towards him as she spoke,

"Good morning Shu..."

The albino's jawdropped. How did this girl know his name? Is she his and (Y/N)'s child? Or did (Y/N) tell her about him?

"U-uhm..."

He was at a loss of words as the (h/c) haired girl tilted her head confused and asked,

"What's wrong sugar cube? Is there something on my face?"

That was it.

Now the crimson blader realised what had actually happened.

This little girl was none other than...his very own girlfriend...(Y/N) (L/N)...

"Is it really you (Y/N)?!"

He asked astonished as the female got even more confused at her boyfriend's question.

"Of course it's me. Who do you think you'd see in my bed other than me in the morning?"

She couldn't read the next expression on the albino's face as he awkwardly took out his phone and turned it's camera onto selfie mode before handing it over to her.

As the girl's (e/c) eyes peered into the screen...

"AHHHHHHHHHHHH!!!!!! WHAT HAPPENED TO MY BODY?????!!!!!"

She screamed on top of her lungs as the red eyed albino was forced to cover his ears and squint his eyes shut.

She looked at Shu with a face that hinted she was gonna cry at any second now. The red eyed male panicked as he tried to calm her down and took her in his arms without wasting another second.

"W-what happened t-to m-me Shu?"

The child asked as her (e/c) eyes had become glassy with tears as Shu quickly responded,

"Honestly, I don't know what happened either (Y/N). Tell me, did you take any weird food or drinks yesterday?"

She shook her head and responded,

"No, I didn't. I only had my normal meals and some fruits yesterday."

"Hmm...then...how did this happen?"

The albino mumbled as he thought about it deeply for a while. Seeing her boyfriend like that, (Y/N) began to panick,

"What if I'm not able to go back to my original self again?! What if I stay like a 5 year old girl forever?! Ahhh!!! I want to grow back up and be myself again!"

"Woah! Woah! Woah! Calm down (n/n)! Maybe we should try to wait for a day or two. Maybe you'll turn back to yourself again by tomorrow or maybe the day after tomorrow."

"But what if I don't?"

"Then I promise to do everything in my power to help you get back to normal. But for now, let's just wait for tomorrow, alright?"

Shu said trying to reassure her that he's got her back and fortunately, she did believe him.

"Okay, I believe you."

End of flashback

Okie! So this is what happened exactly. And since then, your albino sugar cube has been taking care of you all day long like a babysitter.

He'd feed you with his hands, give you toys to play with, give you loads of love and affection when you needed it, etc.

He even took you out to the city for a stroll just like a guardian takes their child out for a while once in every day.

It's not like you didn't like the attention he gave you but the part which annoyed you the most was that he was treating you like a real baby. Like seriously?

Even though you were turned in a child out of the blue, you still had your brain of the teenager you were.

And out of all things, you were his girlfriend! But right now this albino was treating you as if you were his little sister or maybe even...daughter?

P.S. I'm sure you're wondering how exactly you turned in a 5 year old girl. Don't worry, your author chan has an answer for everything.
It was me who spilled a 'child's body' potion on you when you were sleeping at night. 😛🔮🪄

Alright! Now let's continue with the story!
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At Night:
No one's P.O.V.

"(n/n)...are you done?"

Shu asked as he stood up and glanced at the girl who was playing a game on the tablet he'd given her.

When she heard him, she quickly turned it off and sat up straight with a smile and nodded.

The albino packed up his stuff before walking over to her and taking her in his arms. He spoke softly,

"Shall we go home and have dinner now?"

The (h/c) haired child nodded as she held on his shoulders tightly and he walked out of his office.

As the two were on their way towards their flat, they happened to bump in Shu's student, Fubuki.

"Oh, hey Shu!"

The young blonde smiled as he glanced at his mentor before his eyes landed on the girl the albino was holding.

"Hey Fubuki!"

(Y/N) smiled like usual as she greeted him, completely forgetting about the fact that she was not in her real self right now.

As for Shu, he was trying to formulate a reason in his mind to explain what was going on to his student.

"Who- Ohhhh...it's getting late, I should get going Shu! See you tomorrow! Bye!"

The banana haired boy who looked confused at first suddenly smiled as he ran off leaving (Y/N) confused.

"What happened to him? Why did he suddenly run away like that?"

She asked as she looked over at the albino who's face was red by now.

"Because...he thought you're my daughter..."

Her (e/c) eyes widened,

"What?!"

"Yes...didn't you see the look on his face?"

The red eyed albino asked as he looked away with his cheeks and ears red.

The (h/c) haired girl covered her face in her hands out of embarassment as she couldn't believe that Fubuki could've had such thoughts.

Then as if Shu had sensed her embarassment, he turned his face to her and whispered in her ear,

"But...to be honest...the idea of having kids with you isn't all that bad, is it?"

(Y/N)'s face went like 'O//////O' as she pushed his face away which made him laugh,

"S-Shut u-up!!!"

"Alright, alright. Let's go home, my baby (n/n)~"

"I SAID SHUT UP!"
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At home:
No one's P.O.V.

"Food's ready!"

Shu called out as he served the dishes and (Y/N) quickly ran up to the table and sat on the chair as she happily smiled at the food.

Normally, she was the one who would make new dishes for Shu everyday but since today she couldn't even reach up to the slab, Shu made the food.

"Tempura rice and vegetable soup with pickles? Shu! You're the best!!!"

The girl exclaimed as her (e/c) eyes shone with stars in them.

The albino only chuckled at her excitement as he replied,

"I know this is your favourite. That's why I made it. Now what're you waiting for? Dig in!"

Without further ado, the 5 year old girl began eating the food whilst complimenting it in every bite.

"Delicious~"

"Mm~ So good~"

"I love the rice~"

The red eyed blader only smiled feeling glad that she liked the food as he watched her eat everything up.
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After dinner:
In Shu's bedroom:
Second person or 'You' P.O.V.

"Okay now, it's time for my baby (n/n) to go to sleep."

Shu spoke and smiled as he leaned down to kiss your little forehead. You pouted again at the nickname he gave you.

"Stop calling me that, will you?"

You huffed, crossing your arms as he just chuckled before lying down beside you and getting into the blanket as well.

"But you're really my baby. My baby girlfriend~"

He teased as an '💢' mark appeared on your forehead this time and you warned him,

"Say that again and I'm gonna start pulling your hair now!"

"Okay! Okay! I won't! I don't want you to pull on my precious hair!"

The albino quickly raised his hands in defense as you looked away with an angry pout.

But it didn't take long enough for him to take you back in his arms and make your tiny little body lie on his chest. You were a blushing mess because of this.

Still, after half an hour both of you drifted off into a peaceful sleep.
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At midnight:
No one's P.O.V.

Shu and (Y/N) were sleeping peacefully while hugging each other.

Just then a portal like circular thing appeared on top of Shu's bed and a hand, holding a bottle of some kind of glowing potion came out of it.

The hand very carefully poured a few glistening drops of the potion on (Y/N)'s head and then quickly went back in the portal and the magical gateway disappeared.

(A.N. I'm guessing you know what just happened, right? ;) )
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The next morning:
No one's P.O.V.

The sunlight was pouring in Shu's bedroom through the window blinders, giving the room a kind of tinge of golden.

In the blanket, slept the albino in his night dress and an (h/c) haired girl who was...very likely..........naked...

She was the first to open and rub her eyes before slowly sitting up beside her red eyed boyfriend who also happened to wake up due to the loss of warmth from their hug.

"Good morning Shu..."

(Y/N) smiled sleepily as Shu's eyes immediately opened wide and he sat up quickly, startling the poor girl.

"(Y/N)!!! You're back to normal!!! And- wait-"

The albino's face reddened as he stopped mid sentence and the (e/c) eyes of the girl looked at him confused.

"I know...it's a good thing, right? But why is your face so red suddenly? What happ-"

She asked as she looked at herself and also stopped mid sentence.

"AHHHHHHHHH!!!!!!! I'M NAKED!!!!"

(Y/N) screamed on top of her lungs as a few sparrows who were sitting on top of the roof of the Bulls flew away.

Her face also turned red as she was about to get out of the blanket and run straight into the bathroom.

But, a strong arm wrapped itself around her waist making her stop right there.
She turned to look back, only to see a smirking face of Shu who leaned in closer to her,

"You know, I'm not gonna lie that both you and your 5 year old version are the most adorable and cutest in the world but if I'm taking it personally...I prefer this beautiful you~"
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And that morning, as everyone did their usual workout and exercise routines, Shu and (Y/N) did a 'fun' and strenuous one of their own.
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*sipping tea* 🍵
Ah! What a lovely way to start a morning! You and Shu sure know what to do to make your whole day go nice, isn't it? 🤭
LadyireneSofia1502 I'm sorry if I made you wait too long. I'm sorry if you didn't like it or if this one shot was cringe. I'm also sorry for my terrible grammar. 😞
Anyways vote, comment, share and maybe....follow me too? All the characters belong to Hiro Morita, only the story plot is mine.
Stay safe and have a nice day/noon/evening/night.
Sayonara, bug out.