A/N: Warning again, BEFORE going through this please be advised that this story is PURE and UTTER FLUFF FANSERVICE for this pairing. No logic or reason here and it is already established that this type of thing will NEVER happen in Oregairu's universe. Characters WILL be OOC for the most part to fit the scenarios but I will try to keep some or most of their personalities as in tact as possible.

A/N 2: I have not fully written anything in a long ass time so apologies for the sad quality fic, I am trying to get back to writing a little so yeah? idk. again this story is for fun only and nothing more.

You've been warned.

Disclaimer: Oregairu and its characters belongs to Wataru Watari, Brain Base and Studio Feels.

Chapter Rating: K-T

Daddygaya-kun

First Step: And so we accept the mistakes we've made

Hikigaya's POV

A distinctive crying pretty much startled me awake; I should be used to it, no, I AM used to it and yet I find myself waking up confused at the sound of a crying baby rattling the entire house when Komachi is well past that stage, in fact she's nearly in high school so she shouldn't even be crying like an infant… well she isn't actually, because the wailing was not coming from her, it was coming from a crib snugly placed near my bed, more accurately from the little bouncing ball of vomit and shit more famously known as a baby that was desperately crying his lungs out to get my attention. I get it bud, I'm coming.

I reluctantly got off the bed, rubbing my eyes to take away the grogginess as I dragged my feet across the carpeted floor until I reached the white wooden crib. The second I peeked from above, the little rascal immediately stopped crying and stared straight up at me with his bright green eyes before slowly reaching his hands out at me.

I smiled.

"Good morning to you too, buddy."

I reached down and carefully collected him in my arms.

"So… why did you wake Daddy up this early, huh? Are you hungry? Is your diaper wet? Did you prepare a gross diaper for me to change?"

He only stared at me as I went about checking what was wrong. Good news, no shit to clean but he does need a diaper change and I'm guessing he's hungry too. Looking at the digital clock blinking bright red by my bedside, it was about 6:30 in the morning, my own parents are already out of the house for the day and this little guy is definitely asking for breakfast. Normally, his mom would feed him with uhhh mommy stuff but he was with me last night so he's only getting formula milk because Daddy cannot feed using his boobs. His normal routine involves him sleeping at his mother's house, but I noticed how tired she has been lately so I offered to take him for a night or two so she can catch up on sleep at the very least. She was reluctant at first but eventually gave in after I persisted. It has only been one night and I already feel the full impact of a baby, I woke up like 4 times or so during the entire night by him crying and to say I'm tired is an understatement but holy hell, his mom must have been even more tired since she spent the entire two months or so like this; I should have offered like a week, I would offer more but he does need the nutrition he can only get from her… well at the very least I will extend the offer of an entire week to her later if possible.

Making it downstairs, my earlier assumptions were proven right when what greeted me is an empty house more or less, my parents were really already out for the day… Well, it's not surprising since this is normally the time they are out for work anyway, Komachi on the other hand is likely still asleep at this time. A quick shrug of my shoulders before I went on ahead and do the baby routine. I fed him, gave him a quick bath and dressed him up for the day with a new diaper and a onesie my mom bought for him, by this time Komachi was already up, showered and ready. I passed my son unto her for a bit while I showered and got myself ready for school. When I was done, I took my son back from Komachi and told her to go on ahead while I wait for the babysitter that will take care of my son for the day, she nodded, kissed my son's forehead before going on her way. I was about to sit down on the couch to wait when my phone rang.

"Hello?"

"Hachi?"

"Mom? What's up?"

"I'm sorry Hachi but Satou-san can't come in today."

"What? But what about Tetsuya?"

"You're gonna have to stay home with Tetsu-kun today."

"Mom you know I can't."

"I'm sorry Hachi but we don't have much of an option here. I have to go now, I'll see you later okay? Bye."

"Mom wait- mom? Mom?!"

The beeping sound that indicates my Mom has dropped the call rang loudly into my ear. I sighed, dropped my phone to my side then proceeded to rubbed my temples with my free hand.

Not good. I can't miss school today, there's an important exam I have to take but also, I really really would rather not take a special exam instead, I feel they are much more difficult for some reason. Looks like I'm gonna have to do what will possibly bring me to my untimely end and something I will regret later on but for now, let's pretend I'm not in the right state of mind when I made this decision.

With a sigh, I stood up with Tetsuya still in my arms and went to my room to prepare a baby bag.

Yes, I'll bring him with me.

No, this is most certainly not a good idea.

Yes, I'm most likely gonna get severely punished later by two, maybe three merciless, terrifying women.

No, I will not reconsider this.

Yes, I am definitely stupid.

After getting his baby bag prepared, I hailed a cab to school. I'm dumb enough to take my baby to high school but I'm not so stupid as to ride my bike while doing so, that's just gonna net me a gruesome end as opposed to a hopefully quick one later.

Soubu High, 7:55 AM.

The entire cab ride was awkward. I felt the driver staring at my very soul from the mirror. I mean, I guess it's bound to happen when you fetch a passenger and it turns out to be a kid in uniform asking to be taken to a High school while also having a baby tightly strapped into his chest and a very obvious baby bag hanging on the opposite arm of his school bag. Fortunately, he didn't say anything but the staring pretty much shows him shaking his head while not actually doing so.

I took a deep breath once I got out of the cab. I have about 5 minutes left to get to my class but I feel like my legs won't move. Am I second guessing this now? I'm already here and I'm sure a few students have already seen me anyway, I mean they are unlikely to even notice me or know me at all but with the getup I have? I wish I could activate my stealth Hikki and move on but having a baby strapped unto you was like a big neon sign. Ah whatever! I'm just gonna get this over with!

And so I did. I began my short but painfully awkward walk towards my class.

Oh boy.

Entering the classroom usually means just that for me. Everytime I enter, one or two students would look my way for like a split second before realizing it was just me and going back to what they were previously doing. Now though, I seem to have garnered the attention of literally everyone. Every one of them is staring at me wide eyed. Ah shit, damn neon sign.

Miura's POV

For whatever reason I was feeling fairly anxious since I woke up this morning, my parents said that it's normal since it's the first morning in over two months where I woke up without my baby boy beside me but like, there's this feeling at the pit of my stomach that makes me think something is about to happen and that I'm not gonna like it. Speaking of stomachs though, ugh when will mine return to normal? I mean I wasn't a big pregnant woman or anything, and now I can easily hide it underneath my uniform after two months so no one will notice but it's still not as flat as I wanted it to be. I'm lucky enough to have given birth early of this year, it gave me ample time to recover before the new school year started about two weeks ago. Having to stay at home and get home schooled(under the guise of a temporary overseas trip.) for the remaining months of my last year just after I started showing took a little toll on my social life….

But not that much since my friends are in the know anyway. They would visit me whenever they could and I have his company everyday. I smiled at that, he took taking responsibility to a new level, he was there to check on me everyday, he would stay a long time and would go back and forth to get what I wanted, whether it's from the kitchen or from a store about half an hour away. He grumbled and complained but will still do them anyway and he always returns the next day knowing what awaits him. Overall, aside from our parents, he was my biggest support and his presence alone helped me so much to go through it all, the nine hell-ish months that I'm sure was worse for him. But also like, he didn't have to frown all the time! I swear I was so close to just pummeling him to the ground! What if that frown or creepy look gets inherited by my baby?! He'd snort and say that's not how genetic works but like still?! Would it kill him to smile? Haaaa…. mou!

Whatever, that's just how he is, I guess. Him barely smiling wasn't gonna take away from the fact that he was an amazing support and currently is a great Daddy. So much so that he even offered to take Tetsu for a day or two so that I can catch up on sleep. I was reluctant at first but, he had shown just how much responsible he is for the past months and he did pay very close attention to everything that our parents taught us in how to take care of a baby, he's like so good at it now! He says that it's a great skill for he was planning to be a house husband anyway but like how are you gonna be one if you already have a kid? He sagged at that and grumbled about his long term plan being absolutely ruined. I was about to smack him but laughed instead at how stupid the entire thing was to begin with. But yeah, despite my reluctance, I eventually agreed knowing for a fact that he knows what he's doing and that Tetsu is in good hands.

So why the heck am I feeling like this? Like something is literally about to-

Huh? Oh he's here. That's weird, he's usually not this late but I guess he did have to get Tetsu ready for the day too and- wha-what? TETSU?! WHY IS MY TETSU HERE? WHY DID HE BRING HIM HERE?

My entire body went rigid the second I realized the baby carrier strapped unto his chest and the baby bag he was holding. I wanted to go there, slap him and ask him what the hell he's doing but also not because I don't want him to accidentally drop my baby! But even though I wanted to rush there I couldn't. It feels like my feet are nailed to the ground, I couldn't move, I could only stare wide eyed and mouth opened as he, with his head low, briskly walked to his seat. It seems like everybody is in the same predicament as I was because the noise had basically died the second he entered the classroom. My friends, Yui especially, were looking back and forth at us before quickly running up to him after noticing how I couldn't really react properly.

"Hikki! Good Morning!"

Hikigaya's POV

I looked up from getting settled in when Yuigahama called me.

"Oh, yo, Yuigahama." I greeted as I adjusted the strap to loosen it a bit so I could reposition Tetsuya. While doing so, I took even more notice of all the eyes on me, specifically Miura's whose eyes look like they're glaring straight at me even though they actually look just as shocked as others.

Yuigahama leaned close to my ear.

"Uhm.. Hikki, why is Tetsun here?" She whispered, knowing that it's mostly a secret and the only people in the know were her friends, Hiratsuka-sensei and the Service Club meaning Yukinoshita and Isshiki… Well Isshiki is more or less an unofficial member.

"Babysitter cancelled last minute…"

"Then why didn't you just stay home with him?"

"There's an exam I didn't want to miss… by the way, if anyone asked, he's my baby brother, okay?"

"But-"

"Alright! Everyone one settle down and go back to your seats!" Hiratsuka-sensei ordered as she entered the classroom, oblivious to what was going on before she came in. Yuigahama sighed and went back to her seat while looking back and forth from me to Miura who was still pretty much locked into the same position she was in since I came in. The entire class went back to their own seats as well but I can see the side glances they were giving me.

"Good Morning class, so today we're-..." Hiratsuka-sensei stopped mid-sentence once her eyes landed on me. "Hikigaya…. What's-"

"My brother." I interrupted before she says anything she shouldn't.

"... Right. What's your baby brother doing here?"

"There was some last minute thing with the babysitter so she couldn't come in and my parents had already left for work." None of what I said was a lie, the brother thing though? Now that was a big farce, obviously.

"Wouldn't staying home with him be much easier?"

"... Yes but there was also an exam I didn't want to miss so-"

"You can take a special exam."

"But those things are harder than the normal one."

"They're the same exam. They can't be harder."

"Sensei I know they're harder, everybody says so."

"What? The numbering is just rearranged to prevent cheating, they're the exact same exam!"

"...Oh." Welp my reasoning for going to school with my baby was weak before, imagine how utterly stupid it is now.

Hiratsuka-sensei rubbed her temples roughly and sighed. "Listen Hikigaya, when is this exam?"

"Just before lunch."

"Fine. Take the exam then take your brother home afterwards. I'll talk with your other teachers."

"... Thanks." I replied meekly.

Sensei waved her hand at me dismissively and began with her announcement as well as checking attendance for the day. When she left the room, the Sensei next to her took a little longer to arrive than usual so I think she talked to them about the entire situation. This was proven true when the Sensei arrived. She looked at me, sighed and then just nodded her head and proceeded with her lecture.

The remainder of the lecture was pretty bland. I tried my best to listen while also making sure that Tetsuya doesn't make a fuss. So far, he's been a good boy and had stayed quiet, only whimpered a bit that was easily taken care off by rocking him back and forth for a bit.

Then it happened.

Tetsuya's face contorted.

His eyebrows scrunched up together as if glaring with his eyes closed, his mouth pouted with intensity before it bursted.

As if it was in slow motion I witnessed the very moment where his mouth opened slowly to let out a wail. I felt myself stiffen, I wanted the ground to consume me as I noticed the collective stares of everyone in the room.

I should have taken the special exam. Because this is so not worth the easier level eof the normal exam.

In fact it's not even a harder exam to begin with anyway.

In a split second I almost scrambled to calm him down.

"Shhh Tetsuya, please don't cry…" I whispered pleadingly but I know he won't stop because that face he made was a sign that he was hungry.

As I was looking around while continuously trying to calm Tetsuya down, I noticed Miura in her seat looking uncomfortable, she was squirming almost and I know why. She was reacting to Tetsuya's cries.

Then I saw our Sensei glare at me before sighing and looking at me with sympathy.

"Hikigaya, I think he's hungry, go ahead and feed him. You're excused."

Those were like words of freedom. As if being found not guilty in a trial.

I nodded, gave a quick glance at Miura who nodded dismissively at me before I stood up, grabbed Tetsuya's baby bag and scrambled carefully out the door. Once in the hallway, I walked a little ways away from our room, in fact I went straight near the restrooms. It took like 5 minutes tops when I heard footsteps coming my way and even less for a head of blonde to peek through the corner.

"Hey..." I tried to greet casually but the intense glare she was sporting turned my voice into a meek whisper.

"Don't 'hey' me! What the hell were you thinking bringing our son to school?!" She almost yelled, luckily she knew how to control her voice.

"I wasn't-"

"Yeah, I figured."

Damn woman. You just cut me off to make me sound dumb.

Fair enough.

I've said this plenty of times but what I did really was the pinnacle of stupidity.

She shook her head before collecting our kid from me, rocking him back and forth as she did so before walking away.

"Where are you going?"

"The nurse's office. I'm not gonna feed him in a restroom, do you know how disgusting that is?"

"... Oh."

"Yeah oh. Now come on, we don't have a lot of time."

I didn't answer verbally. I simply nodded and followed her lead. Reaching the nurse's office, I peeked through the door and fortunately enough the nurse is currently out so I gestured for Miura to enter. Once inside, she quickly sat on top of the available bed and unbuttoned her uniform.

That was my cue to look away and so I did.

A few seconds passed and I could hear the content sound of my son being fed.

"...I'm really sorry…" I muttered just enough for her to hear.

"You better be. Do you realize how dumb this is? Not to mention risky! Good thing Hiratsuka-sensei is in the know or we're both dead!"

Yes already! I know it's stupid, okay?

"I'd say in my defense but Sensei already debunked that myth."

Seriously Sensei. How could you? Isn't that like, really cruel? In front of the whole class too!

"Was that your actual reason? Because that's really stupid even for you. Well, especially for you. Aren't you normally more logical than this?"

"Look, it was early, Tetsuya kept me up most of the night, mom called last minute so my brain only registered the need to take the exam as the crucial point of all this okay?"

She scoffed. Then snickered. Then full blown giggled.

Hey!

"Awww poor Hikio~ did my baby boy kept you up?~"

"Hey don't mock me!"

"I'm not. I just find it funny since I never thought this would happen in a million years."

She's right. Our situation now, this entire ordeal sounds like a fanfiction written about us by a random person linking us two. It just sounds so impossible. Wait no, it is impossible! But here we are now, with a bundle of impossible happily feeding on his mom's…. assets.

I'd have dirty thoughts but this is too much of a wholesome bullshitty thing happening that I can't stomach nor justify that kind of thought. Like what kind of messed up head thinks dirty about this just because boobs are involved?

Wait what was I saying before all these? Something about or situation, I think.

"True. Heck it's not supposed to happen, it was an accident, after all."

Miura hummed.

"An unfortunate one at that, like really? Why did it have to be you? Like you're so gross and creepy!"

I flinched.

My back was still turned towards her so I can't see her expression but I knew she was mostly joking. It was made obvious by the tone she used, I've spent everyday for nearly a year with her to know when she's serious or when she's not. I'm not saying she was happy that it was me but, she isn't as repulsed by the idea as she said she was.

"Pft. That goes double for me. Who'd want the mother of their child to be so loud and obnoxious? Not to mention violent."

She scoffed.

"You're just bitter that your whole house husband plan is in ruins now. You're lucky to have had a kid with me."

"Tch."

Silence.

Then a giggle.

"Honestly though, it isn't so bad. I mean sure you're the last person I'd ever want a kid with but, I don't regret Tetsu's birth at all. In fact, I'm quite happy I had him, he's my world now." She said wholeheartedly and I glanced a split second to see how fondly she looks at the baby in her arms. "Also, I may not have liked how we got here but like you're not a bad Father at all, in fact you're a great Dad that I'm actually sorta glad you're the one I had Tetsu with."

My cheeks heated up at that statement. I never expected her to say something like that. Not only did she not regret having Tetsuya but she's also kind of glad she had him with me?

"Hoh are you blushing Hikio?" She snickered.

"Don't be stupid."

She giggled again then we were enveloped in a cozy silence.

"All done~" Miura stated in a sing-song voice. "Burp him while I fix myself up."

"Are you decent?"

"Decent enough. Now come on."

I sighed and turned around to pick Tetsuya up from her. Her uniform was still left unbuttoned but she's very much covered, it just looked disheveled. After cradling Tetsuya in my arms, I gently raised him to have his head on my shoulder as I pat his back gently to make him burp while Miura buttoned and straightened her uniform.

"I'm going back now. Sensei might think I'm taking too long." Miura said as she got close and pecked Tetsuya on his little cheek. "Bye-bye Tetsu, Mommy will see you later, okay? I'll see you later too, Papa-kun~" She threw a tongue at me and snickered before opening the door.

"By the way,"

"Yeah?"

"Thanks for taking Tetsu for a while, it really helped me get a decent sleep…." She held a thoughtful look for a second. "Well, decent enough at least. I don't say it often but thank you for like, taking responsibility and always being there for us."

I looked to the side.

"You don't have to thank me for that. It's only natural that I take responsibility, it takes two to tango after all."

"Geez! You do good, you're a great person, give yourself some credit sometimes, Hikio." She shook her head before finally leaving the room and closing the door behind her.

I stood there in the middle of the nurse's office with a baby propped against my shoulder looking stunned at what his mother had just said before leaving.

Then he burped and I was back into reality.

"Satisfied?" I asked him as I lay him back down on my arms. Obviously he couldn't answer, he just stared at me with his eyes that mirrored hers. But I took that as a yes because he slowly drifted off to sleep seconds later after I rocked him for a bit. I carefully tucked him back into his carrier that I had fastened safely to my chest before grabbing the bag and leaving the nurse's office on my way back to the classroom.

This entire situation was crazy. I've reflected on this a lot of times already. From finding out about the pregnancy, to his birth and to now months later and I still think about how crazy and impossible this entire thing is but the baby on my chest brings me back down to realize it's all real. I'm a father of a kid who's biologically my own even though I'm still a stupid kid myself. There was no going back, there's no reset button for this, this is the kind of relationship where the option to go back simply did not exist. The one thing I could do…

No.

The one thing I SHOULD do is take responsibility. Mistakes were made and accidents happen but no matter how it went about, Tetsuya is and will always be a blessing to the both of us. And like her, I will never regret his birth, his existence.

I don't know what the future holds for us now but it doesn't change the fact that we're parents. So I have to keep my chin up even though I am what I am because raising this baby is the biggest challenge of our lives. It's also the longest journey we will ever take.

But most importantly, it is the best ride we'll ever have because it's all going to be for Tetsuya's sake.

Our Tetsuya.

Our Baby.

Our Son.

He's the one thread connecting me to her and it's a thread that will never break.

And honestly, I don't mind at all.

.

.

.

.

.

.

A/N and there you have it, a completely impossible story for your reading pleasure or displeasure? ahaha. Again, don't come at me about it being unbelievable because obviously it is hence why a lot of warning signs at the start.

I did this for two reasons:

1. for FUN coz why not?

2. a sort of practice to see if I can get back to just writing again. No rhyme or reason for this particular setting, I just thought it's hilariously impossible that it's gonna be fun to see how I can write scenarios for it without completely destroying their characters. Whether I did a good enough job or crashed and burned it's up to you guys, I tried. /Shrugs

Bonus reason: I just want fluff for these two. Idk I missed it, I guess?

Anyways... thank you for reading everyone! and thank you for anyone who just recently or have always supported MNF. Idk where that will go but maybe I can write for it again eventually if I ever actually do get back my will to do it :)

Oh and just in case ya'll are wondering, No this has nothing to do with LAAF. no connections whatsoever. Also separate universe from MNF's tangled timeline.

That's it from me.

Peace out! Bye!

- Zero