'This' - Artorias/Sif talking
'This' - Zhongli talking
'This' - Soul of Cinder talking

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~3D POV    Morning~

In the his room we can see Y/N just waking up. As he opened his eyes he  looked at the clock and saw that he still has 1,5 hours before school. So with an annoyed sigh he got up from bed only find out that he can't get up at all. When he looked down he saw Kuroka laying on top of him while Luna hugged his left arm. And it didn't help that they weren't wearing any clothes. So after 15 minutes of getting out of bed without waking them up he took a quick shower and got dressed into a white shirt and blue hoodie and black jeans. As he exited the room he made his way to the kitchen and grabbed some toast. When he walked into the living room he saw a panicking Sucrose looking around so he approached her and put his hand on her shoulder and she jumped because of the sudden motion.

Sucrose: O-oh Y-Y/N it's y-you.

Y/N: Why are you panicking Sucrose? Did something happen?

Sucrose: W-well y-you see. Y-y-yesterday me and M-merlin tried to do s-some potion b-brewing and one of the p-potions fell on K-kokomi when s-she walked in a-and t-turned into a c-child and i can't f-find her.

Y/N: Calm down. Where did you last see her?

Sucrose: I-i saw how s-she ran into the l-living room.

Y/N: Ok so let's search here.

As they started searching after a minute Y/N heard a faint giggle coming from the kitchen so he turned around and saw Kokomi looking at them from around the corner. So he went to her and picked her up.

Y/N: Found you! And why do you look so cute as a child?

Baby kokomi: *cute giggle*

Y/N: Sucrose I found her!

Sucrose: Oh t-thank goodness. Now I only need to b-brew the p-potion to nullify the e-effects.

Y/N: How long will it take?

Sucrose: I-it'll be ready b-by the time you c-come back from s-school.

Y/N: And I can't leave you with her because she'll cause a bit of trouble and I don't want to bother the girls. You know what, I have an idea.

~scene change brought to you by cute little Yae getting her tail combed~

-Still 3D POV-

Y/N: And that the reason why I brought her here.

Right now we can see Y/N standing in front of his Teacher while holding baby Kokomi who was wearing a miniature Kuoh academy uniform.

Teacher: *sigh* So you're telling me that your cousin had some important thing to deal for today and asked you to look after his daughter and you couldn't leave her at home because there's no reliable people?

Y/N: Yes. Please she'll behave. Right Lila?

Lila(Kokomi): *cutely nods*

Teacher: *sigh* Ok but only for today.

Y/N sat down at his desk and set Kokomi on his lap and they started listening to the teacher.

Teacher: Ok so today's lesson sounds like this "What we can find and creatures in the ocean".

Kokomi beamed with happiness and Y/N and the teacher noticed it and chuckled.

Teacher: 'maybe it won't be that bad after all'

~timeskip till lunch time~

-Y/N POV-

I was sitting on the rooftop eating bento I prepared while also feeding Kokomi. After a while the doors to the roof top opened and Sera and Remi walked in and noticed us. When they walked closer they also noticed Kokomi and their eyes widened as they sat down next to us.

Remi: Wait is that?

Seraphina: Kokomi but a child?

Y/N: Yup. I couldn't leave her at home because I fear Kuroka and Luna would teach her some unwanted things and Sucrose needed to brew a potion to undo the effects.

Seraphina: Ok stop right there. What exactly happened?

I told them what Sucrose told me and they stayed quiet for a moment.

Seraphina: Ok that's reasonable enough.

Y/N: Ok now onto the matter at hand. When did you plan on telling me about your arranged marriage with Riser Phoenix?

Seraphina: *chokes on her food* H-how do you know about that?!

Y/N: When father took me to the meeting Lord Phoenix spoke about the marriage. So what are you going to do about it?

Seraphina: I'm planning on challenging him to the rating game and if I win I'll be free along with Rias.

Y/N: And what if it's Rias who's going to challenge him before you?

Seraphina: Well then we're *looks at Kokomi* Ummmm.

Y/N: *covers Kokomis ears* Continue.

Seraphina: We're basically fucked. She did not train her peerage what's so ever. The only one who trained in her peerage is Akeno. And maybe Koneko and Kiba a bit. But she didn't train whatsoever.

Y/N: *uncovers her ears* Well damn. So when are you meeting the walking KFC?

Remi: It was planned today after school in the ORC club room.

Y/N: Oh, I'll be there as well. So he won't try to do anything stupid to you.

*BELL RINGS*

Y/N: Lunch is over. Hell continues.

Remi: Oh! Also Sona asked to tell you that she needs you at the Student Council office.

Y/N: Understood, I'll head there right now.

-3D POV-

With that they left the roof and headed to their classes but Y/N and Kokomi went to the student council office. When he arrived Y/N knocked on the door and entered and closed the door behind him. When he looked around he saw Sona sitting on one of the couches with her peerage behind her and a chess board on the table in front of her.

Sona: Y/N, please take a seat.

He sat down across from her and put Kokomi on his lap and all eyes were in him and Kokomi.

Tsubaki: Ummm, is that Kokomi?

Y/N: Yup, because of an accident she got turned into a child for a day and I didn't want to leave her at home with irresponsible people.

Sona: Understood, say, do you play chess?

Y/N: 'So this is where it's going huh' A bit, yea.

Sona: Would you mind playing a game with me while we talk?

Y/N: No, not at all. I'm going with black pieces.

Sona: Very well.

With that their game started while the peerage and Kokomi watched.

*tap*
*tap*
*tap*
*tap*

Sona: So how's your experience in school so far?

*tap*
*tap*
*tap*
*tap*

Y/N: So far so good. Though it's unneeded for me as I already have 2 degrees.

Sona stopped for a second and let that sink in and then continued.

*tap*
*tap*
*tap*
*tap*

Sona: And what are those?

*tap*
*tap*

Y/N: A law degree and an engineering.

*tap*
*tap*

Sona: Impressive.

*tap*
*tap*

Sona: And checkmate.

Y/N: Good game.

Sona: Indeed. Well that's all you can go.

Y/N: Ok then.

Y/N stands up and puts Kokomi on his shoulders and walks to the door. He opened it and exited but as he was about to walk away he turned to Sona.

Y/N: Oh and Sona *she looks at him* I don't appreciate when someone tries to get me marry them through chess *Sona and Tsubaki went wide-eyed* have a good day.

With that he closed the door and went to his last class for the day.