The broad-shouldered boy chose the stairwell because stairwells made accidents believable.
Lâm knew that the moment he saw the boy leaning near the landing between the third and fourth floors. Too casual. One foot against the wall. Two other students below, phones low but angled badly. A teacher's voice somewhere far enough not to matter.
The old Lâm would have trusted his body.
The basketball Lâm would have read the gap, shifted left, slipped the shoulder, and made the contact look embarrassing for the other boy. He had spent years learning how to move through crowds: defenders, screens, hands reaching at the ball, elbows pretending to be natural. A court was only a room where people lied with their bodies under rules.
The new Lâm knew his hand could not afford a fall.
The boy smiled.
"Careful."
He had used the same word in the auditorium.
Lâm stopped two steps above him.
"Move."
"I am not blocking you."
That was technically true. The worst kind.
There was space, but not enough space for a boy with one weak hand and two phones watching. If Lâm squeezed past, the boy could shift a shoulder. If Lâm shoved him, the clip became aggression. If Lâm turned around, the clip became fear.
The rehab specialist's voice, not really voice, entered his bones.
Do not catch yourself with the bad hand.
Mai An's line followed.
Write what can survive a teacher reading it out loud.
He looked at the students below.
"Are you filming?"
One hid his phone too late.
The boy's smile widened. "Why so tense? People are worried about you."
Worried meant ready.
Lâm took one step down.
The boy shifted exactly as predicted, shoulder rolling outward, enough contact to unbalance but not enough to bruise cleanly.
Lâm did not push back.
He turned with it.
Not elegant. Not martial. More like falling around a table in a crowded restaurant. His injured hand started to fly out. He yanked it against his chest, hit the wall with his good forearm, and let his shoulder take the scrape.
Pain flashed up his bad wrist from the sudden pull.
But he stayed standing.
The phones missed the fall they had wanted.
The boy's face changed for half a second.
Then he laughed.
"You okay?"
Lâm looked at his own shoulder where the wall had burned skin through the uniform.
"You touched first."
"Stairs are narrow."
"Then move wider."
The words were stupid. He knew that even as he said them. Too sharp. Too close to bait.
The boy stepped closer.
"What did you say?"
There it was. The invitation.
Lâm saw the angle of the boy's jaw. Saw the phone lens behind his elbow. Saw himself grabbing the collar with his good hand, injured hand clawing at cloth, pulling the bigger boy close enough to make the camera forget who began it.
The want was physical.
It frightened him how physical.
His fingers curled.
Not into a fist. They could not. A fist required trust in the knuckles, wrist, impact line. His hand chose something older and uglier: hook the sleeve, drag, tear balance, use pain as teeth.
The boy's eyes flicked down.
He saw the shape too.
"Do it," he said softly.
Lâm opened his hand.
One finger at a time.
The effort made sweat gather under his collar.
He stepped down into the smaller gap the boy had left, turned his shoulder flat, and passed without touching again. His backpack brushed the wall. His injured hand stayed against his chest like something he had stolen from himself.
Behind him, the boy said, "Still scared."
Lâm kept walking.
The clip they wanted still did not exist.
In the restroom, he locked himself in the last stall and breathed through his teeth until the nausea passed.
His shoulder stung. His wrist throbbed. His pride made worse noise than both.
He opened Wrong Shoes with his good thumb and wrote:
Stairwell, 3F-4F landing. Broad-shouldered student from another class present. Two phones below. Shoulder contact initiated by him while I passed. No fall. No retaliation.
He stared at the last phrase.
No retaliation.
It looked weak.
It looked useful.
He saved it.
At the clinic that afternoon, the rehab specialist examined the scrape on his shoulder.
"Wall," she said.
"Stairwell."
"Person?"
He did not ask how she knew. She never asked questions in the right order unless she already understood half the answer.
"Shoulder check."
"Did you catch with the bad hand?"
"No."
"Good."
The word did not comfort him.
"I wanted to," he said.
"Catch yourself?"
"Hit him."
The rehab specialist placed a cold pack on his shoulder and pressed until he stopped avoiding the pain.
"Wanting is not action."
"It almost was."
"Almost is where rehab becomes useful."
He looked at her.
She took his injured hand gently this time, which made it somehow worse.
"Show me."
"Show you what?"
"How you wanted to hit him."
"I didn't hit him."
"Then show me the part you stopped."
Lâm hesitated.
Then his fingers curled.
The claw returned around empty air.
He expected her to correct it immediately. Instead, she watched the shape with professional interest and something colder beneath it.
"That is not a punch."
"I know."
"Do you?"
He opened his mouth. Closed it.
She touched his wrist, then the base of his thumb.
"This comes from fear of impact. You do not trust the hand to strike, so it wants to attach. Hook. Pull. Tear. Make the other body carry your broken line."
Lâm hated every word because every word fit.
"Is that bad?"
"Untrained, yes."
"And after rehab?"
She released his hand.
"Still dangerous if you pretend it means you are ready."
Across the city, Hạo Nhiên gave Thuận the same lesson with a different language.
Tân Thành stood opposite Thuận on the mat, grinning with the confidence of someone who had been told to provoke and planned to enjoy following instructions.
"Come on," Tân Thành said. "Protect me."
Thuận did not move.
Tân Thành slapped his own cheek lightly. "Oh no. I am in danger."
Tân Phong sat near the wall, recording openly for training review. "This is somehow worse than your usual acting."
"Shut up."
Hạo Nhiên raised one hand.
Tân Thành lunged.
Not at Thuận.
At a small wooden marker placed between them.
The old Thuận would have stepped in to intercept, because the marker represented something to save and Tân Thành's body moved like a threat. This Thuận saw the setup half a beat late but forced his front foot to stay rooted.
Tân Thành grabbed the marker and threw it aside.
It clattered against the wall.
Thuận's whole body wanted to punish the disrespect.
Hạo Nhiên watched his shoulders.
"There," he said.
Thuận exhaled.
"There what?"
"The moment you wanted to make your anger look like duty."
The room became too quiet.
Thuận looked at the marker.
"It was only wood."
"Yes."
"Then why does it matter?"
"Because one day it will not be wood."
At the clinic, the rehab specialist wrapped Lâm's hand with white tape, not for support but to make him see the line of his own fingers.
"A hand cannot be a fist just because grief orders it," she said.
Lâm flexed slowly.
"Then what is it?"
"Today? A warning."
"To who?"
"To you first."