Gender Is Just a Social Construct (KiriBaku)

Part 1

Eijiro hobbles out of his dorm room's bathroom in panic, grabbing his school clothes, realizing he's almost late.
"This is so not manly," He mumbles and struggles into a now too tight shirt and too big pants, forgetting his tie altogether and having no clue how he's even going to fit into his shoes.
As he reaches the door, a thought pops into his head... "Shit.. a bra?"
He grabs his phone and texts the only girl he can think of,

"Mina, please, you owe me a 'no questions asked.' come to my room, bring a bra.. and shoes? Please. Idc if we're late"

Pinky: "ok.. weird.. but ok I'll be there in 5"

About 4 minutes later, he hears a knock on the door and rushes to open it, finding a confused Mina.
"Thanks... I guess seeing me is explanation enough?"

"Holy shit Ei! You're a... a girl?!" Shes shocked.

"Yeah, I know. I was out with Fatgum last night trying to find this feminist villain who wants to turn the majority of the world into women and keep men as slaves or some shit, it's weird but.. she got me.." he says, turning red.

"Yeah that is weird, but here," she holds out a red bra and an extra pair of her shoes.
Kiri turns even redder.

"C-can you.. help?" Now as red as his hair, a tear starts to run down his cheek, "shit, why am I crying?"

"I'm guessing hormones, but yeah. It's ok hun, can you take off your shirt, I promise I won't look," she smiles sweetly and closes her eyes as the redhead takes off his shirt, exposing new curves and a chest. "Okay now turn around for me ok?"
He turns around and Mina wraps the bra around so she can clasp it in the back.
"Alright now put your arms through the straps, and if it's uncomfortable, it may not be the right size but try to adjust it as good as you can.

Kirishima turns around, "H-how do I look?"

"You look great," Mina replies, " now try on these shoes and I brought you some smaller pants because I figured you wouldn't want to wear a skirt," she says, handing them to him.

"Yeah, thanks... where did you get them?" He questions.

"I have my ways," Mina smiles mischievously.

10 minutes later, the two make it to class.

"Ashido and Kirish-..." Aizawa doesn't finish his sentence.
The entire class does a double take. As they start whispering, tears start streaming down Kirishima's face again.

"Come here, Eijiro," Aizawa says, gently. The redhead sulks towards his desk.

"What happened, kid?"

"I got hit with a gender bending quirk, that's all," he sniffs.

"Alright... Ashido?"

"Yes sir?" She replies.

"Please take Kirishima to Recovery Girl so we can see if this can be fixed."

~30 minutes later~

"I'm sorry honey," Recovery Girl states, "unless I can find someone with a reversing quirk or someone else with gender bending quirk, there's nothing I can do..."

"Well then we can find whoever did this to me!" Kirishima adds.

"Honey... didn't you hear? The woman who did this to you, she died..."