My Hero Academia: Hell is a Mess

Little Izu

Prompt: Gets into a fight with a villain with a physical de-aging quirk and is turned back into a five-year-old but with his mind still fully intact.
This comes from someone on my Discord, and I hope I did justice.

---

"MOUNT LADY, YOU DUMB FUCK! I NEED YOU TO EVACUATE THE CITIZENS! PATCHY, I NEED YOU TO FIND CITIZENS!" I scream as I wrap a villain up in CAT's grapples and slam them into an already-damaged wall. Patchy squawks as it flies off to do its job.

Currently, I'm apart of a midday raid that the criminals decided to attempt to pull off. This should be easy, but, due to my status, they aren't willing to listen to my ideas.

Mount Lady continues her stupidity, "Why should I listen to you? I almost got the main villain down!" Currently, she's in her regular form fighting a rather large dude with a strength-enhancing quirk. Unforntually, she's wasting time with the fight because she sucks. Right when the villain tries to punch, I shoot the grapples to grab his wrist and use him as a source to pull myself towards. Before he has a chance to recover, a huge crack echoes when I slam my weight into his back. I reel the grapples back as I take note of the situation. It seems we have most of them out beside the stragglers. Mount Lady stands there watching me.

"We still need to get the citizens out of the rubble! There's three trapped over there." I state as I point in the direction Patchy is at. I don't bother to listen to her as I go to deal with the rest to take their eyes off the evacuating citizens.

it goes mostly well until someone tries to get a sneak attack while Mount Lady isn't looking.

My CAT armor speeds up for me to ram the villain.

Only to fucking blackout.

Yay me...

---

Good news: I woke up without pain.

Bad news: I don't know what the fuck happened yet.

I wake up to find myself in Recovery Girl's office, and I can't help but groan because she's going to have my neck about this. I really need to stop getting myself injured somehow.

With a sigh, I sit up to see the problem, "FUCKING HELL - OW!"

"Language, Midoriya!" Recovery Girl snaps at me. Want to know what has me cursing?

I am fucking five again. Not mentally, but physically.

"How'd everything go?" I ask.

"You just woke up, and you're more worried about the results of the battle than yourself." She says with no amusement.

"Uh, yes? How will I know if this sacrifice was worth it?" That causes her to sigh.

"Everyone made it out okay, and it ended quickly. It's good to know that you have your normal mindset."

"Thank God! I was naive back then!"

"You still are."

"OFFENDED!"

Thankfully, the squad interrupts before the argument starts.

"OH MY GOSH, HE IS SO ADORABLE!" Nemuri squeals as she bounces over to look me over.

"BE GONE, THOT!" I scream as she gets way to close. She huffs when she realizes I am still me.

"Rude. You're lucky you're adorable."

Shouta sighs, "At least we don't have to worry about his mental health."

Hizashi scratches his mustache, "I kind of wanted to see how a little Izuku acts, though."

"I sucked as a kid. I was smart but naive. How long am I like this?" I snap as I cross my arms.

"24 hours," Shouta responds.

"Fuck."

Time for a montage of my suffering.

---

"IZUKU, GET BACK HERE!"

"NO! I AIN'T WEARING YOUR STUPID BABY BOY SAILOR SUIT, BITCH!"

"Is nobody going to question how little Izuku is managing to out-smart Nemuri despite being so slow?" Hizashi asks.

"I AIN'T THAT SLOW!"

---

Maijima glares down at me, "You're not allowed in here. We don't allow children in the labs."

"You think that's going to stop me, Monty Mole?"

"Where is your babysitter?"

"Napping."

"Of course he is."

"He wanted nothing to do with this."

"I'm surprised he isn't getting blackmail."

"He doesn't know what that is."

---

"Nezu, look! You're finally taller than someone!"

"Yes. I see that Izuku. I should get a replica of my suit and put it on your now."

"NO THANK YOU!"

---

"Hey, Shrub!"

"Call me Shrub one more time and you won't see Shouta for a week, Hizashi."

"So mean!"

---

"Izuku, you're smaller. You don't need that much food." Shouta says as he hands me an adult-sized plate with the same amount as everyone else. To give you an idea, I eat, like, three plates per meal.

"Yes, I dooooooooooo!"

"You say that even in your teenage form."

"OH FLIPPITY FLOPPING WELL!"

---

"SHO, PUT ME THE FUCK DOWN!" Shouta drops me on the bed and gets in beside me and starts petting me, lulling me out, "Screw...you..."

"You need energy, brat."

With that, I knock out.

---

"You were always this hyper?" Shouta asks after I punch him in the face to wake him up.

"Uh, yes."

"Damn it..."

"FIVE DOLLARS TO THE SWEAR JAR, SHOUTA!"

"You can't say anything when you curse way more."

"I can because I can say whatever the fuck I want."

Shouta shakes his head in disappointment.