The Late Night Anomaly

Rain battered the classroom windows as Rin Takeda stepped into Room 3-C, a thick stack of history papers pinned under his arm.

Most of the students were barely conscious. A few gazed at the Mizuhara skyline, while others slouched beneath their desks, faces bathed in the pale light of tablets.

It imitated normal perfectly.

Rin dropped the papers onto his desk and uncapped a dry-erase marker. “I assume everyone read the chapter I assigned yesterday.”

No one answered.

He waited for the familiar rustle of shifting pages. “We’ll begin with the Coastal Floods of 2012.”

Nothing.

Not even a groan of teenage complaint.

Rin paused, the marker still between his fingers.

He looked across the room.

Every student was staring back at him.

A boy near the window slowly raised his hand.

Daichi Mori.

“Sir...” Daichi hesitated. “There isn’t any chapter about that.”

Rin’s gaze dropped to his lesson plan.

The assignment was there, written in his own handwriting.

He checked the page number.

He said nothing.

A girl near the back shifted in her seat.

“You never assigned anything yesterday.”

Rin looked down at the lesson plan.

“Open your textbooks,” he said quietly.

The class obeyed. Rin flipped open his own copy, his fingers finding the familiar sections.

Chapter 8. Economic Migration. Chapter 9. Oceanic Resource Wars.

His hand stopped.

There was no Coastal Floods chapter.

He stopped turning the pages.

Slowly, he flipped backward. Then forward. He checked the edition number.

Everything matched. Chapter 8 bled seamlessly into Chapter 9.

Without a word, Rin walked to the nearest student.

“Your textbook.”

The student handed it to him.

Rin turned to the same section.

Chapter 8.

Chapter 9.

Nothing.

Rin looked up.

Nobody had turned a page.

Daichi’s pen hovered above his notebook.

No one was laughing.

They were watching him.

“...My mistake,” Rin said.

The room remained utterly silent. Rin stared down at the textbook.

“Alright. Let’s begin with Chapter 9 instead.”

Pages turned across the room, but Rin barely heard them. Before he could speak, the rustling stopped.

A girl sitting in the second row raised her hand. Rin recognized her immediately. Nagi Aoyama. She was brilliant—the sort of student who always seemed to be paying attention.

“Yes, Nagi?” Rin asked.

She stared at the open textbook. “That isn’t what happened.”

A few students snickered, grateful for the distraction.

“The city didn’t drown first,” Nagi said, her voice flat. “It burned first.”

The room plunged into stillness.

“That was the other version.”

The class erupted into laughter. Daichi Mori groaned. “There she goes.”

Rin didn’t speak.

He didn’t move.

One laugh stopped. Then another. Until only the rain remained.

He waited for the joke.

No one said anything.

It never came.

“...Other version.”

Nagi looked at him.

“Where did you hear that?”

She didn’t answer. She just looked down at her desk.

Rin turned back toward the board.

“Open to Chapter Nine.”

Twenty minutes later, while the rest of the class copied notes, Nagi was doing something else. She was drawing lines in the margins of her notebook, crossing some of them and connecting others.

Rin stayed at the podium.

The scratching of pencils filled the room.

Hers didn’t.

He waited.

Nagi shifted slightly in her seat.

Only then did Rin step away from the podium.

He walked slowly down the aisle, his footsteps quiet against the linoleum. When he reached her desk, he stopped beside it and leaned against the empty desk next to hers.

He looked at the page.

A long silence passed between them.

The page was filled with circles, intersecting lines, and massive geometric structures. At the center was a single symbol.

He knew it.

Not remembered. Knew.

His mind searched for the memory.

There wasn’t one.

His thumb pressed harder against the edge of the desk.

His eyes remained on the symbol.

Several seconds passed.

“...What is this?” Rin asked softly.

She froze. The pencil cracked between her fingers. She quickly covered the ink with her forearm.

“You’re not supposed to see it yet,” she whispered.

Rin looked at her.

He had dozens of questions.

Somehow, only one mattered.

“Why?”

Then—

“Sir... do you ever wake up exactly before 3:00 AM?”

Rin looked at her.

The bell rang.

The sharp electronic chime shattered the silence. Chairs scraped against the floor. Voices flooded the room as students hurried into the hallway for the next period. Nagi closed her notebook, slung her bag over her shoulder, and walked out with the others. She never looked back.

Rin remained at the desk.

The rest of the school day dissolved into a blur. Somehow, instinct carried him through it. He heard himself teaching, answering questions, and writing on the board, yet by the time the final bell echoed through the building, he couldn’t remember a single lesson.

Students poured through the front gates toward home while teachers drifted into the faculty room.

Rin joined them.

The faculty room was stiflingly dry. Several older teachers nursed paper cups of coffee and finished marking assignments beneath the fluorescent lights. Rin wrapped his hands around a warm mug.

One of the older teachers raised his head from a stack of assignments. “You alright, Takeda?”

Rin looked at him.

“...Why?”

“You seem tired.”

Rin looked into the dark surface of his coffee. “...Maybe.”

“You should take a day off,” the teacher offered.

Rin’s blurred reflection stared back at him.

“...Tomorrow won’t be different.”

The teacher looked at him for a moment, but said nothing.

Rin lowered his gaze.

The teacher went back to grading.

He stared into the coffee.

The ripples slowly settled.

Sir... do you ever wake up exactly before 3:00 AM?

The last traces of steam disappeared.

He took a sip. It had gone completely cold.

The cup clicked softly against the saucer.

A few minutes later, he stepped out into the hallway.

The school had almost emptied. Lockers slammed somewhere far behind him. A burst of laughter echoed briefly through the corridor before fading into silence.

He walked toward the exit, keeping his eyes fixed on the floor. Outside, rain whispered against the school windows.

Everything looked perfectly normal.

Sir... do you ever wake up exactly before 3:00 AM?