A normal school day becomes a live geometry problem.

Third period history was supposed to be boring.

It did its job for the first twenty minutes.

Mr. Dorsey droned on about trade routes and grain shipments with the kind of slow misery that made the clock hands reluctant to move. His marker squeaked on the whiteboard, leaving a faint chemical smell that mixed with dry-erase dust and the stale warmth of a room packed with too many bodies.

The heaters clicked on and off under the windows, pushing air that tasted like old carpet and winter coats. Somewhere behind Ryan, a pen kept clicking—someone’s nervous rhythm trying to carve out control.

Megan took real notes, because Megan treated everything like it might matter later. Her handwriting was tight and clean, bullet points and arrows, as if she could diagram the world into cooperation.

Ethan sketched an abstract blob in the margin of his worksheet—too many angles, too many teeth—then disguised it with arrows and labels like “economic pressures” and “regional instability.”

Ryan stared out the window.

The winter sky was a clean, flat blue. Students moved between buildings with shoulders hunched against wind you couldn’t hear from inside, their breath faint silver puffs that vanished quickly—proof of life, proof of cold, proof of physics still behaving.

No ripples. No oval glows. No wrong reflections catching more than they should.

Normal tried to hold.

He wanted to let it. He wanted to sit in the ordinary and let it close over Sunday night like a lid. But the corridor memory kept leaking through—the way the trophy case had felt a fraction too aware, the way light had tried to organize itself around him.

He’d learned something ugly in the last forty-eight hours: you could be safe and still be watched. The difference was whether you gave the watching a clean angle.

Ryan let his gaze drift when Dorsey finally turned his back to write on the board.

Two posters sat side by side on the bulletin board by the door, newly stapled, edges too crisp. One was for the winter formal—black background, glittery letters, a couple in silhouette under fake stars. The other was a fundraiser flyer with a school logo and a shiny photo of a football helmet, the kind of image that caught light and threw it back at you in sharp little flashes.

Ryan’s eyes snagged on the gloss.

It wasn’t the poster itself. It was the way the overhead lights stitched into it—hard rectangles of white that moved when you moved.

A surface that could become a coordinate leg if you let it.

He shifted in his seat, subtle, turning his body so the angle didn’t line up. He kept his face down, looking through his lashes at the sheen, at the reflected sliver of the classroom.

Megan noticed instantly. She didn’t look at the posters. She looked at Ryan’s posture.

Her pencil stopped. “What?” she mouthed, barely moving her lips.

Ryan didn’t answer out loud. He tapped once on the edge of his desk with his knuckle—one quiet beat that meant pay attention—and then wrote on the corner of his notebook: GLOSS.

Megan’s eyes flicked to the word, then to the board, then—carefully—to the bulletin board. She angled her gaze so she saw the posters in peripheral, not straight on.

Ethan leaned back in his chair, stretching like he was bored, and in that stretch he shifted his line of sight away from the door. “You guys are doing that thing,” he murmured under his breath. “The thing where you look like you’re about to defuse a bomb in a history class.”

“Quiet,” Megan whispered, and it wasn’t rude. It was urgent.

Mr. Dorsey kept talking, marker squeaking, oblivious to the fact that three kids were mapping reflections like their lives depended on it.

Because they did.

Ryan let his gaze slide across the room without settling. He counted reflective surfaces the way you counted exits in a crowded theater: the window glass, the chrome leg of a desk, the glossy cover of a textbook, a girl’s lip gloss catching a bright dot when she turned her head.

Too many little footholds.

And then—

The reflection on the fundraiser poster didn’t match the room.

It wasn’t dramatic. Not a shadow in the shape of a monster. Not a face forming out of darkness.

It was… wrong by a fraction.

The reflected line of the whiteboard marker tray bent in a way it shouldn’t. The bright rectangle of a ceiling light hesitated, as if it had to decide where to be. The world inside that glossy square looked like it was a half-step behind.

Streaming lag.

Ryan felt his throat tighten. He kept his breathing slow. He forced his eyes away before his brain tried to complete the picture.

Don’t complete the triangle.

He stared at the edge of his desk instead, at the scratched laminate, at old initials carved into it by kids who’d had no idea the universe could rewrite itself.

His cuff stayed quiet. No pulse. No warning.

That made it worse.

Because it meant this wasn’t a Hunter closing in. It meant the lattice was… flexing.

Megan slid her notebook an inch toward him and wrote, tiny: SAME?

Ryan wrote back: LAG.

Ethan’s foot tapped once against the metal chair leg—an impatient rhythm that sounded normal to anyone else. He didn’t look at them, but he spoke anyway, voice low. “If this turns into a hallway situation, I’m walking out like I forgot my phone. Just so we’re clear.”

Ryan almost smiled. Almost.

Dorsey turned back around. “Now, if you’ll look at the map—”

Ryan did not look at the map.

He watched the poster’s shine in his peripheral and waited for the wrongness to either fade or commit.

For three long breaths, it hovered on the edge of becoming something.

Then the heater clicked, the room shifted with a little wave of warm air, and the gloss returned to normal.

The reflected light snapped back into place as if it had never hesitated.

Ryan exhaled through his nose, slow and controlled.

Megan’s pencil started moving again, but her knuckles stayed white around it.

Ethan leaned forward, pretending to pay attention, and murmured, “Tell me that was just school being school.”

Ryan didn’t answer right away.

Because school had never felt like a live wire before.

And now it did.

When the bell finally rang, the whole room exhaled like it had been holding a secret. Chairs scraped. Backpacks zipped. Mr. Dorsey called after them about homework as if homework was still a law the universe respected.

Ryan let the tide carry him into the hallway. He didn’t rush. Rushing made your eyes jump to the nearest shine. He kept his gaze low, tracking only what he had to: the dull strip of tile by the wall, the matte paint between lockers, the places that wouldn’t hand his face back to him in pieces.

Megan drifted to his left without making it look like an escort. Ethan took the right like it was habit. They were three kids walking to lunch. They were also three people trying not to become a geometry problem in public.

A freshman bounced past them, phone held up to record a friend doing a stupid dance for social media. The screen flashed a bright rectangle as it turned—Ryan felt the instinctive tug in his attention and forced himself not to look straight at it.

Megan noticed anyway. Her fingers brushed his sleeve, a tiny correction. Grounding. Don’t feed it.

Ryan didn’t know if the lattice noticed the discipline. He only knew he couldn’t stop doing it.