Chapter Text
The first time Katsuki Bakugou walked into the ER at 2:47 a.m., he was dripping blood all over the linoleum.
He smelled like sweat and rust and asphalt. His knuckles were split, his eye already darkening, his lip split in the kind of way that said he didn’t duck when he should’ve—or maybe didn’t want to.
Izuku didn’t flinch. He stepped closer.
“Name?” he asked, pen already poised, voice calm as oxygen.
Katsuki narrowed his eyes. “You’re the one who paid me. What the fuck do you think?”
Izuku’s pen paused. Then continued, steady.
“Right,” he murmured. “Katsuki Bakugou.”
Three months earlier.
Izuku Midoriya works sixty-hour weeks and sleeps in a shoebox studio above a ramen shop. His hands are steady. His charts are immaculate. His patients love him.
He is also in love with a man who doesn’t know he exists.
Not really.
He’s seen him fight, though.
Underground circuits. Illegal venues. Blood-slick pavement. Katsuki fights like he’s trying to burn himself out from the inside, and Izuku—watching silently from the back of the crowd—can barely breathe.
He knows how it’s supposed to go.
You meet someone. You talk. You ask them out. You’re normal.
But Izuku is not normal.
He is, however, clever. And very—very—patient.
So one day, Katsuki Bakugou gets an anonymous offer: ten grand. One round. No names. No questions.
All he has to do is win.
Izuku watches from the shadows. When Katsuki takes the hit that splits his brow—just right—he smiles.
Because he knows exactly where Katsuki will go.
And Izuku will be waiting with gloves, gauze, and a heart that’s been bleeding for years.
The ER was quiet in that uncanny, middle-of-the-night way.
The fluorescents buzzed too loud. Every footstep echoed. It was the kind of quiet that made your heartbeat sound like thunder in your own ears.
Izuku liked it best like this. Controlled. Predictable.
He was charting a discharge when the doors banged open.
Another late-night walk-in.
Or stumble-in.
He didn’t look up right away. He knew the sound of those footsteps. Heavy. Off-balance. Familiar.
His pen stopped mid-sentence.
He raised his eyes.
And there he was.
Katsuki Bakugou. 6 foot 2 of blood and fury. Blonde hair clinging to his forehead. A cut curling from lip to jaw. One eye swollen shut. Limping like he couldn’t feel his ribs anymore.
He looked like a curse someone hadn’t managed to kill yet.
He looked magnificent.
Izuku set his pen down.
“Rough night?” he asked mildly, like Katsuki wasn’t the man he’d spent years obsessing over.
Katsuki collapsed into the nearest chair. “That’s what ten grand buys me?”
Izuku smiled. Soft. Small. Sharp.
“You won.”
“Damn right I did,” Katsuki muttered. Then, with a half-grin, “Still got my ass kicked. A little.”
Izuku crouched in front of him, gloved hands hovering. Clinical. Careful. Almost reverent.
“You need six stitches,” he said, angling Katsuki’s jaw gently.
“You do it.”
Izuku blinked. “I always do.”
Something flickered in Katsuki’s good eye. Not surprise. Something quieter.
“…Right.”
It had started months earlier. A calculated risk. One anonymous payment. One easy opponent. Katsuki didn’t ask questions. Just followed the cash.
Izuku had watched from the crowd, hood up, fists clenched, breath locked behind his teeth as blood burst from Katsuki’s brow. The sight made him shiver.
He’d waited.
And four hours later, Katsuki had walked into his orbit.
Bleeding. Alone. Perfect.
And Izuku had finally touched him.
Back in the triage room, Katsuki flinched but didn’t pull away as Izuku stitched his skin back together.
“You do this a lot?” Katsuki asked, voice a little hoarse. “Fixing up dumbasses like me at 3 a.m.?”
“Only the ones who matter,” Izuku said before he could stop himself.
Katsuki glanced at him. Curious. Just a little too sharp.
Izuku looked down, reaching for gauze, ears pink.
Katsuki didn’t push. But he didn’t look away either.
When the last stitch was tied, Izuku leaned back.
“All done.”
Katsuki stood slowly. Unsteady. Izuku’s hand hovered near his elbow, just in case.
“You’re not gonna tell me to stop?” Katsuki asked, quiet. Testing.
Izuku smiled. It didn’t reach his eyes.
“No. You’d ignore me.”
Katsuki stared at him a moment longer. Then grunted. And left.
Izuku stayed.
In the room. In the moment. Breathing in cigarette smoke, sweat, and blood.
He’d see him again.
He always did.
Izuku Midoriya is good at two things:
- Taking care of people.
- Ruining himself quietly.
He was twelve the first time he saw Katsuki fight.
Not live. Not even in person. Just a shaky vertical clip on a grainy forum—bare fists, cracked concrete, no rules.
The video was thirty-two seconds long.
Izuku watched it more than a hundred times.
Katsuki had been just a kid, but already violent poetry—rage turned to motion, every strike calculated and vicious. He fought like someone trying to disappear into the violence. Or crawl out of it.
Izuku understood that.
He didn’t grow up soft. His mother got sick early. He learned to survive with duct tape and a first aid kit. He was in nursing school before he’d ever had a proper date.
Except—he had Katsuki.
On his screens. In the back rows of fight clubs. In the ER, once—just once—where he stitched his hand up after a bad match.
Katsuki didn’t remember.
Izuku never forgot.
The first fight he bought was an accident. A friend. A favor. A match rigged just enough.
One clean hit.
One reason for Katsuki to bleed.
Izuku had waited in the ER, gloves ready.
It felt like fate.
Now it’s routine. Izuku books matches through burner accounts. Chooses opponents. Just enough pain to bring him back. Not enough to break him.
He never touches Katsuki outside protocol. But he knows how he bleeds. Knows where he scars. Knows how to make it gentle.
He waits. And waits.
Some nights, he thinks he’s sick.
Other nights, he tells himself he’s just careful.
Mostly—he doesn’t think at all.
Until Katsuki comes back.
Bruised. Breathing.
And Izuku gets to put him back together.
Izuku doesn’t believe in soulmates.
He believes in trauma. In repetition. In gravity.
Katsuki is violence in motion. And Izuku? Izuku is the constant orbit.
Every bruise is a word. Every match a message. Izuku is fluent in Katsuki’s pain.
All he has to do is stay close enough to hear it.
It’s not love.
At least—he doesn’t think so.
It’s hunger.
He doesn’t sleep if it’s been too long. Gets twitchy. Jittery. Palms itching for contact. The drawer full of burner phones and fight footage says more than he ever will.
Every time Katsuki shows up, Izuku logs it.
He keeps files. Notes. Measurements. Patterns.
He’s timed Katsuki’s smiles. Memorized his pulse.
He’s never spoken to him outside work.
But he knows what brand of shampoo he uses.
Knows he sleeps curled to his left.
Knows which side to shield if a building were burning down.
He thinks about it.
A lot.
Tonight, Katsuki doesn’t come.
No pager. No limp. No blood.
Izuku unwraps a sandwich he won’t eat and paces the med closet like a man coming undone.
The fight had been booked. The opponent chosen. Paid for. Izuku’s own money.
And still—nothing.
Did Katsuki win too fast?
Did he lose?
Did he stop?
The silence is worse than the blood.
And then—
Beep.
“Triage: Male. Mid-twenties. Suspected concussion. Transport ETA: 4 minutes.”
Izuku exhales like surfacing from a nightmare.
Four minutes later, Katsuki walks in.
Bloodied. Smirking.
Alive.
Izuku nearly collapses with relief.
“You’re late,” he says.
Katsuki shrugs. “Had to walk it off.”
Izuku’s hands are already gloved. Precise. But they linger just a little too long.
Katsuki notices.
“You always do my intake?”
“When I’m on shift.”
“…You’re always on shift.”
Izuku tapes the gauze in silence. “You keep showing up.”
Katsuki watches him. Something thoughtful. Dangerous.
“…Huh.”
Not a question. Not yet.
But Izuku feels it.
The shape of suspicion.
The scent of something shifting.
And for the first time—
Katsuki looks at him not like a nurse.
But like a secret.
And Izuku?
Izuku smiles.
Because he is.