In a place of great grandeur almost impenetrable and also the center of the world economy. The Demon Kingdom Tempest as its name was also known as the monster kingdom. Currently ruled by a king, the most powerful demon lord in the world, this person is none other than Rimuru Tempest. Right now he's in his office confronting the greatest enemy of all time, none other than paperwork.

Rimuru: "It's been 10 years since I defeated Yukki, now I have to finish this paperwork. Ciel, can you tell me how many more papers are left? "

Ciel: "yes, there are about 200 more"

Rimuru: "Haiz, it's almost done, let's try to finish it now."

*1 hour later

Rimuru: 'finally done. "

Ciel: "congratulations, what do you plan to do next?"

Rimuru: It's not afternoon yet so I guess I'll go visit Vesta, to see what he's created.

After saying that, he teleported to Mr. Vesta's research place, when he arrived, he did not see Vesta but found on the table there was a healing potion and a blood-red vial.

Rimuru: "What is the red potion Ciel?"

Ciel: "I don't know but if you want you can drink it then I'll analyze it."

Rimuru: hmmm, Vesta rarely makes harmful things, I think it's okay, luckily I'm a bit thirsty.

Then he took the red bottle and drank it.

Ciel: report, there's something strange try to enter your body, do you need to remove it?"

Rimuru: "does it have any effect harm me."

Ciel: "No, according to me parsing, it will be valid for about 1 day.

Rimuru: "Let's just let it enter your body, let's see how it goes."

Ciel: "yes master."

After saying that, Rimuru immediately felt his body begin to heat up, and then he began to fall asleep a bit.

Ciel then separated from Rimuru's body and transformed into a girl of about 16 years old with blue hair mixed with silver, a black suit with a black cape, and red eyes with colored hexagons

Ciel: Master, are you okay?

Just then Vesta comes and asks.

Vesta: Ciel-sama, what's wrong?

Ciel: What is the red potion, I can't analyze it clearly, why it has some strange substance that I can't analyze and I think it's not harmful to Rimuru and why is it like this. (Ciel looks at Vesta and says.)

Vesta: Well, that potion can make us younger, but because we don't know if it's effective, we're looking for someone to test.

Hearing that, Ciel turned to look at Rimuru and saw something that made her extremely shocked, she saw a baby about 2 to 3 years old, about 30 to 50cm tall, with blue hair reaching to her neck, golden eyes, and black clothes with a little black cape.

(Author: When Rimuru turns into a baby, his clothes become small too.)

Ciel: Your medicine is effective but it seems a bit overdone.

Vesta: y......yes, but don't worry Ciel sama because this medicine is only effective for about 1 day, because I'm still testing it, so I don't dare to promote its full effect.

Ciel: Haiz, maybe you need to do some research.

After saying that, Ciel picked up Rimuru and used [thought comunication] with Diablo.

Ciel: Diablo we will start the meeting in 1 hour, remember to call everyone for me.

Diablo:fufufu, yes I'll let them know right away.

*1 hour later
At the meeting room

Everyone had fully gathered except for one person, Rimuru. 

Seeing this, Benimaru asked Ciel.

Benimaru: Ciel sama, where is Rimuru sama?

Shuna: That's right Ciel sama, where is he.

Ciel sighs and says: he will not be in this meeting, I asked everyone to come here also to talk about his problem now.

Hearing that, the atmosphere in the room suddenly changed.

Diablo: who dares to offend him, let me kill that person.

Zegion:  no Diablo, let me kill that person.

Shion: I don't know who is it, but I won't let that person have any arms, legs and face.

Ciel (thinking): oh wow, I did not finish speaking yetand they has already turned out like this.

Ciel: hey guys, calm down, it's not what you thinking.

After that, the room became quiet and Ciel spoke up again.

Ciel: Rimuru-sama has become...

Before Ciel finished speaking, Diablo spoke up.

Diablo: sorry to interrupt Ciel sama, but I feel a strong arua behind the door.

Saying that, everyone looked at the door and prepared to fight. When the door opened a baby about 2 or 3 years old came in and was trying to learn how to walk.

Shuna: a baby?

Shion: wow, so cute.

Testarossa: ara, why does this baby look so similar to Rimuru sama.

Carrera: Why does this child have such strong arua.

Ultima: wait, is this... Rimuru sama?

Ciel: yes that is Rimuru sama and he was turned into a BABY.

All: Whhhhhhhhhhhhaaaaaaaaaaaaaaaaaaaatttttttttttttttttttt.

They didn't believe that their lord or king could be this cute. Upon hearing everyone's screams, Rimuru got scared and was about to cry, Shion now raised her arms and picked him up.

Shion: aaahhh, I've never seen you so cute, Rimuru sama(said with sparkle eyes).

Shuna: Hey Shion, let me carry him.

Chloe: No, let me take care of sensei for you.

While the girls were fighting over baby Rimuru, Benimaru and Zegion asked Ciel why Rimuru was turned into a baby. Ciel narrates everything and says how he will be a baby for about a day, now it's about 22 hours and 30 minutes until he's back to normal. Just as Ciel got up from her chair, someone was hugging her. It was none other than baby Rimuru. 

Rimuru looked at Ciel with a face:

And say a word that makes everyone surprised.

Rimuru: ma...ma...

Hearing that word Ciel immediately blushed like a tomato because Rimuru always called her Ciel or Ciel sensei but this was the first time he called her mama which made her heartbeat really fast. She immediately covered her embarrassed face with her hands and shouted.

Ciel: aaaa...hhhhhh, he... he j...just call me mama?!

The girls were jealous and said: Why does Rimuru sama call Ciel sama mama, it's not fair at all.

Ciel was now blushing and Rimuru continued to speak.

Rimuru: mama, are you okay, mama.

Ciel then turned to look at Rimuru with a red face and said.

Ciel: I...I'm okay, do you want to play with me?

Rimuru: Mama, I'm hungry.

Shion heard that and said.

Shion: don't worry, I will cook dinner for Rimuru sama.

Shuna: No Shion, let me cook dinner for him.

When Benimaru heard Shion's cooking, he sweated because he knew her food was scary, Rimuru already knew what Shion's food was like, now that Rimuru is in baby form, how will he know? Shion's food was like, Benimaru saw that he could only pray for Rimuru that it would be okay.

*20 minutes later
The food has arrived.

Diablo: let me feed Rimuru sama to eat.

Shion: No second secretary, let me feed it for him.

So they were fighting over who would feed Rimuru. After eating for a while, it was already 9pm. So the girls continued to fight over who would sleep with baby Rimuru. But what they didn't know was that the baby Rimuru was no longer there. Before that, Ciel had teleported him and Ciel back to the house where Rimuru always sleeps. When Ciel told Rimuru to sleep, he spoke.

Rimuru: Can mama sleep with me, I'm scared to sleep alone.

Hearing that, Ciel froze for a few seconds and spoke.

Ciel: okay, I'll sleep with you tonight.

Rimuru: yay, I love you so much.

He then kissed Ciel on the cheek and went to bed. Ciel was blushing and thinking about the kiss just now. That night she couldn't sleep because Rimuru hugged her so tight and did not let her go.  (There are only 19 hours left for Rimuru to return to normal.)

To be continued