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Fifteen again.

Summary:

Aizawa and Toshinori return home after fighting a villain, and while Toshinori immediately collapses on the couch and sleeps due to almost overusing his quirk, Aizawa continues his nightly routine. He makes tea, and goes to sit in bed and sleep soon. But he notices something. He feels.. smaller over all…? It’s a weird feeling. He sets his tea down and checks himself in the mirror. Being caught off guard as what he sees isn’t.. himself…

Chapter 1: After the fight.

Notes:

PREWARNING!! THIS WORK CONSISTS OF PHYSICAL AGE REGRESSION. NOT MENTALLY. THIS IS NOT IN A SEXUAL WAY, THERE IS NO SEXUAL IMPLICATIONS IN THIS WORK. THERE WILL NOT BE ANY IN THE FUTURE.

(See the end of the chapter for more notes.)

Chapter Text

Aizawa walks up to his apartment door, shaking. God that villain was strong… But Toshinori was nice enough to come help even on 50 minutes of All Might time…

He unlocks the door and walks inside. He takes his scarf off and hangs it on the coat rack. It’s 10:23pm. He can hear the shower running. Probably Hizashi. Shinsou is either asleep or pretending to be. He doesn’t care either way. As long as he’s rested enough for school tomorrow.

Eugh… He has to work tomorrow… That means waking up early…

He makes his way to the kitchen and starts the kettle. He plans on making tea to help with his physical exhaustion from that fight. Maybe some for Hizashi too. He grabs a container of non-caffeinated tea and measures out enough for him and Hizashi.

The kettle stops. He pours the water in a tea steeper and added the leaves. He sets a quick timer on his phone for 7 minutes and walks off to go change.

He takes his shirt off and pauses. He can’t be assed to put another on. So he just changes his pants and walks back out. Half way to the kitchen he trips and falls. He groans and rubs his head. Did these pants get longer.? They felt long… He stands and pulls them up more, tying the tie tight so he hopefully won’t trip.

He walks into the kitchen and checks the time. 3 minutes left. He sighs and grabs a plate, putting some tea cookies on it. He grabs his and Hisashi’s matching cups and pre-adds sweeter and cream to Hizashi’s and nothing to his own. The timer goes off.

He yawns and pours the tea, evening the cups out before trashing the tea leaves and setting the steeper aside. He grabs both cups and heads to his bedroom. He sets his cup on his sidetable, and Hizashi’s cup on Hizashi’s sidetable. He quickly goes back for the tea cookies and gets into bed. He sets the cookies on his lap and grabs his tea, sipping it.

He pauses as he studies his hands for a moment. They seem smaller. He feels smaller. He shifts and sips his tea more. Maybe he’s over imagining stuff. He glances over as the bathroom door opens, Hizashi stepping out in a towel.

”Good shower?” Aizawa asks. He flinches a bit at his own voice, it sounds weird.

”Mhm!” Hizashi doesn’t seem to notice. Maybe he’s overreacting. But also Hizashi hasn’t looked at him yet.

Aizawa goes back to his tea as his husband changes. He grabs a cookie and dips it into the tea before eating it. He yawns a bit.

”You drinking tea?”

”Mhm. Made you some.”

”You did?” Hizashi piped up, finally looking at Aizawa. Hizashi pauses before shaking his head and looking again. “… I think I’m hallucinating..” Hizashi lets out a half laugh before spotting his tea and grabbing it, sipping it.

”Oh?”

”Yea… Anytime I look at you, you look 15 again.” Hizashi laughs.

Aizawa laughs too. It’s irrational. Unreal. But there’s doubt in his laugh. He feels his hair and pauses. Shorter. Shoulder length. He carefully sets his tea down and head to the bathroom.

”Sho?”

”Just checking that you’re hallucinating. I have a feeling.”

”Of course I am, you’re not actually 15.” Hizashi follows. Aizawa walks into the bathroom and looks at the mirror. The blood drains from his face. Holy crap he does look 15. What is that about. He feels his face, turning it, he pinches himself, hits his head to try and get him on track. Nothing. He still looks 15.

Hizashi stands in the doorway. “Huh, it’s in the mirror too.”

”… Zashi.. you aren’t hallucinating… Unless this is some weird thing where we’re in the same dream—which I checked—I think I’m.. actually 15 again…”

Hizashi pauses and his face drops. He sets his tea down and grabs Aizawa’s face, feeling it. Like he’s double checking this is real. “Mouth.”

”Whuh?-“ He mumbles, his face being squished by Hizashi.

”I can’t remember if you had braces and if anyone gets braces at 13-15. I wanna see.”

”NO?” Aizawa slams his mouth shut. “This is a real problem!” Aizawa whisper yells, keeping his mouth as closed as possible.

”It’s like 10:30. Who can help at half past 10.”

Aizawa pauses. He’s right… He doesn’t even know anyone who can help.

”But we have no clue how long this lasts…” He mumbles, his face still being squished.

”And we just gotta hope! If nothing happens in a week or so we’ll back track, find the problem, and try and fix it!” Hizashi reassures him. “Now let me see if you have braces.”

”NO—“ Aizawa tries to pull away but Hizashi forces his mouth open.

”YOU DO!!!” His face brightens. “You have blue rubber bands on them too!!”

”GET YOUR THUMB OUT OF MY MOUTH!!-“ Is what he tries to yell, but it comes as just sounds from Hizashi’s thumb being in his mouth to look.

”I just showered! I’m squeaky clean.” Hizashi smiles, letting go of Aizawa’s mouth and wiping his thumb off. Aizawa spits into the sink.

”It tasted like soap…” He wipes his mouth, huffing.

”Oh. Whoopsss…” Hizashi rubs his neck. “Do you want me to go borrow some of Shinsou’s clothes.? They’ll fit you better than this. I’ll get you pj pants.” Hizashi smiles. Aizawa stares before huffing.

”Sure. Just get me something for tomorrow. I need my job.” Aizawa walks out of the master bathroom before getting back into bed. He grabs his tea and sips, eating his cookies again.

”Okie doki!” Hizashi turns and smiles before heading out to go steal—BORROW clothes from Shinsou’s clean laundry.

Aizawa sighs. This is gonna be one hell of a ride.

Notes:

Again I will restate! This is not to be in a sexual way, but in a way of purity! It won’t even be in a weird way!