AN: im back since there's positive feedback yeet-

EDIT: whoopdewoops i made a continuity error due to lack of research and forgetfulness so ill be making a few changes because if i dont change it there's gonna be a giant gaping plot hole in my story. kudos to the guys who noticed the mistake pls kill me-

"Y-yag-gi."

"…What?"

Yagi stared in shock at the six month old baby pointing her (middle) finger at him. '… Are infants supposed to talk at this age? And no, Yagi. Whatever you're thinking, she is not flipping you off.'

"E-eat. Hungry."

He blinked, before picking her up and bringing her to the kitchen. "Well then, let's get you some milk, alright?" He said, feeling slightly proud at the feat Sai had been able to achieve. "After that, let's go to the park! I heard there's a new playground built there." He said out loud, regardless of the fact that the kid couldn't understand her.

As Yagi fed Sai with the bottled milk, he couldn't help but wonder if this is what it's actually like to have a child.

If so, then he doesn't think that he should have one. Ever.

Yagi's face is kinda funny whenever Sai- Rin finally learned her new name after hearing it being said by the man thousands of times - (un)intentionally gives him the middle finger.

'Honestly though, with how batshit insane this new place is, I don't think I even have enough fucks to give anymore.' Sai thought with a shudder, thinking about her last encounter with the outside world. 'Seriously, one simply cannot have that many fricking legs.'

In a span of six months, she managed to fuck herself up- which is a new record by the way -just by saying a bunch of words no six month old baby should be able to understand, let alone speak. She stopped cold, sweating nervously under Yagi's scrutinizing gaze as the skinny man picked her up and brought her to the kitchen.

Good thing the guy's inexperienced when it comes to babies, or else he would've been suspicious of her by now, or worse, send her to a hospital for a check-up.

He said some things in Japanese that she couldn't quite understand, although she heard the phrase 'let's go' being uttered.

'Damn it, are we going outside again? Ugh.'

A thought suddenly struck Sai, as she noticed something regarding Yagi's... appearance.

'Why...does his eyes look like that? Like... they're so... hollow. I mean, I could still see his pupils but...'

It's just... sunken. And his eye bags certainly didn't make it look any better. Also, his eyebrows. Where are they.

She froze when Yagi suddenly looked at her, as she unknowingly babbled out her thoughts. She was sure it was just gibberish though, since she still has limited vocabulary.

…Yagi did not regard her action as suspicious, in which she isn't sure whether it's a good thing or not.

Probably the latter, considering the circumstances.

As Yagi gently put Sai down on the grass when they arrived in the park, he noticed that she likes to crawl. A lot.

At first, she just sat there with him, looking around her surroundings with an impassive stare. Then, she starts to roll around on her stomach while attempting to go on all fours. When she succeeded, she just wandered around the area, with Yagi to follow and observe her.

'Cute.' He thought with a small grin, as he watched Sai pick up a small stick and draw some squiggles on the ground. 'She's artistic too. Just like her mother.'

As he sat next to her while watching her doodle, a middle aged woman with another baby came up to them, looking rather enthusiastic. "Oh my, what an adorable child! Is she yours?" She chirped.

'Well, she's definitely not wrong about Sai being cute, but her being my daughter? Nah.' Yagi thought, yet still nodded as he didn't bother to correct the woman.

Sai looked at her curiously, as if trying to assess her. She then crawled over to him and held up her hands, as if asking him to pick her up. "Up."

Yagi smiled slightly, standing up while carrying her in the process. "C'mon now Sai, let's-"

"Oh, her name is Sai? Such a cute name!" The woman giggled, as Yagi sweatdropped at her cheerfulness.

'Oh, like you're one to talk, All Might.'

Still, when is the woman going to leave them alone? Oh fuck, she's looking at Sai again. "Who's the cute little baby? You are!" She cooed, as Yagi sighed quietly.

This is going to be a very long day.

'Crap.'

It's Sai's first birthday, and Yagi doesn't know what to do. And to top that, he was also called in to do hero work. In Sai's first ever birthday.

'What to do, what to do…?' He frantically thought , glancing at the tot and at the door back and forth, contemplating his priorities. 'Ugh, I can't leave her here… But I don't know anyone who's competent enough to look after her… The others are also busy with their work…'

He sat down on the couch, running a hand through his hair. He couldn't think of anything at all. And it's Sai's birthday! He can't just leave her on such a special day!

But then there's also hero work. He also can't just leave the people who might need his help alone.

'Yet…' Yagi can't help but thought. "…Can a hero be at least be selfish for once…?" He said out loud, before punching himself (which was a bad idea honestly since he was still in his skinny form and punching himself in that form is pretty useless if not inconvenient) for thinking such things.

'Goddamnit Yagi, get your priorities straight! You're All Might, Symbol of fuckin' Peace! You can't just abandon people in need like that!'

He sighed (he's been doing it a lot lately now) as he gazed at Sai with a soft look.

She was sitting on her crib, glancing around at the small steamers and balloons that say 'Happy Birthday' with slight interest.

Yagi frowned; if only there was a place where you can leave babies- wait.

He smiled, as he finally thought of a solution.

'I hate this.' Sai thought with a scowl, as she was stuck playing on the daycare with some obnoxious pricks. 'I really hate this.'

'I can't believe he left me here on my birthday!'

Seriously, can't the guy at least reconsider her feelings?! Like, okay, a normal baby might not be affected by this but still! It's her fucking special day.

THERE'S NOT EVEN A SINGLE SLICE OF CAKE!

Yagi better make up to her for this shit.

And so here she is, a once dignified adult- teenager, reduced to a mere snot nosed brat surrounded by even snottier brats. Why did this happen, some wondered.

Sai herself doesn't know.

"UGH- SHUT UP!" Sai yelled to a group of toddlers, who just wouldn't stop babbling nonsense to each other. God, what fucking headaches.

Everyone suddenly stopped whatever they're doing.

'Oh thank god they shut up-'

HOLY- FUCK THEY'RE COMING AT HER ABORT ABORT ABORT-

"AAAAAAAAAAAA-" Sai screeched as she was assaulted by a mob of crawling menaces covered in drool before her scream became muffled by said menaces' blubbering.

It was nice having a second life. Actually no, not really. Fuck this shit.

Sai did not enjoy her first birthday at all.

When Yagi picked Sai up from the daycare, he did not expect her to immediately cry loudly.

He halted suddenly, before looking down at the wailing kid in distraught. 'Wh-what?!' He thought frantically, as some bystanders stopped by and looked at him disapprovingly.

"Sh, ssh." Yagi hushed her, as he walked home as fast as his skinny legs could drag him. "C'mon now, please be quiet." He pleaded at her, which was pretty pathetic to be honest.

Oh god, to think that All Might asked for mercy at a mere child. Symbol of Peace, his ass.

Goddamit, he knew he should've at least asked Chiyo-san or Tsukauchi-san to entertain her.

As they finally arrived at the flat, Sai immediately ceased crying. Then giggled madly.

'What,' Yagi thought with a deadpan. 'Are you shitting me right now.' He thought, giving Sai a blank look.

What a mischievous brat.

"Well, since you embarrassed me in public today, I suppose that means you're smart enough to know it's your birthday, huh?" He asked her, as she kept giggling at his misfortune. "Tsk. What a cheeky brat." He muttered.

Sai suddenly clapped, before reaching for something behind his back. "Oh, you want cake, huh?" He said, as he walked to wards the object in question. "Alright, alright. I'll give you a small slice. Geez." He mumbled, as the infant kept wiggling out of his grasp to reach the cake.

"Da!" Sai babbled, as Yagi set her down the couch to get a slice. "Cake!" She shouted, as Yagi laughed at her excited nature.

It was just the two of them on her special day, but it's fine. They have each other. For Sai, that's the best gift she could ever ask for.

There's also cake, too, so all is good.

AN: seems like sai's bein a little shit lol also dad might having issues is the funniest thing to write ever haha