Rimuru was currently brushing his teeth to get ready for bed, although he knew he was always clean, this was his habit before he reincarnated as a slime.

*In Rimuru's bedroom

Ciel is currently sitting on the bed and waiting for Rimuru, she is currently holding a Rimuru slime stuffed pillow in her hand. She was currently imagining that stuffed pillow was Rimuru. She said immediately.
Ciel: good night, master.

She then kissed (on Rimuru's forehead) that stuffed pillow. At this moment, Rimuru had just arrived in his slime form and saw this. He jumped on the bed and immediately returned to his human form. When Rimuru looked at Ciel, she was blushing and her eyes were still looking at that stuffed pillow, unaware that Rimuru was now beside her. The two were silent for a moment and Rimuru spoke up.
Rimuru: Ciel, are you imagining that stuffed pillow is me? He said while blushing.

Ciel:?!?!?!?!, master?!

Both of them looked at each other and blushed.
Ciel: y...you've seen what I've done, haven't you? Ciel said while blushing.

Rimuru(thinking): So cute!

Rimuru: Ah, I haven't seen anything yet Ciel.

Rimuru lays down on the bed and says.

Rimuru: good night, Ciel.

Ciel: good night, master.

*At midnight

Ciel was still awake and saw Rimuru was slightly sweating and Rimuru's face was red.

Ciel: Master, are you okay?

Rimuru: I'm fine, you don't have to worry about me, Ciel.

Ciel: Master, I have a request to tell you.

Rimuru: tell me.

Ciel: I want a goodnight kiss from master.

Rimuru:?!?! Um, can I do it at another time, I'm a...a little embarrassed right now. He blushed and said.

Ciel: y.....yes.

Rimuru (thinking): I want to give her a goodnight kiss too, but why am I so embarrassed.

When Rimuru turned to look at Ciel, he saw Ciel kissing Rimuru's stuffed pillow on the forehead.

Rimuru: I hope she sleeps well.

*skip to morning(7am)
Ciel woke up first and she is now looking at Rimuru's sleeping face, she had cooked breakfast before and is waiting for Rimuru to wake up.

Ciel (thinking): Master's face is so cute when he sleeps, it's just a pity that it's too late to kiss master a good night kiss.

*a few minutes later
Rimuru woke up and saw Ciel.

Rimuru: Good morning, Ciel. He said while he was rubbing his eyes

Ciel: good morning, master. I have already cooked breakfast for you, please come down to eat.

Rimuru: Thank you, Ciel.
As soon as he said that, Rimuru put his hands on Ciel's face and he kissed Ciel.

Ciel:?!?!?!

After that, Rimuru left and went to have breakfast, and Ciel was surprised and blushed at what Rimuru just did to her.

BONUS

After Rimuru and Ciel finished their breakfast, Rimuru continued to go to his office to do the paperwork, and Ciel went to Veldora's place to deal with him, because yesterday (chap 2) Ciel was punishing Veldora, but he luckily run away. When Ciel reached Veldora's place, she saw Veldora riding a large toy tricycle.

Ciel: Veldora, what are you doing?

Veldora: ah, it's nothing, just trying out this tricycle, because I read the manga and found this tricycle is good, so I asked Ramiris to make this tricycle.

Ciel:...(out of words).

Veldora: Oh yeah, what are you doing here, Ciel?

Ciel smiles wickedly and says, of course, to punish you, because yesterday I didn't finish handling you and you ran away.

Veldora(thinking):  Oh no.

*several hours later
Rimuru had just finished the paperwork, now he was looking for Ciel. When he reached Veldora's place, he saw something very shocking. It was Ciel crying.

Rimuru: !?.....Ciel, why...why are you crying, who...who made you cry?

Ciel: master(hic), Vel(hic)...Veldora makes me cry(hic).

Rimuru immediately glanced at Veldora with eyes that were threatening and unfriendly. Veldora was sweating profusely.

Rimuru: Veldora, what have you done to my Ciel.

Veldora: Calm down...Calm down Rimuru, let me explain.

Rimuru: how can I stay calm when I see my Ciel crying.

After that, Rimuru was holding a thick paper fan in his hand.

Veldora (thinking): I'm screw.

End chapter3 and BONUS.
(Author: don't ask me why Ciel is crying, if there are mistakes in this chapter, please forgive me because I don't have time to fix it today.)