Extra is the Heir of Life and Death

Chapter 217 217: Hydrogen bomb VS baby situation. AND. A thousand rivers didn't invent gravity

Sebastian sat hunched over the wooden study table like a man being personally wronged by education.

The laptop screen glowed pale against the dim room, a rectangle of white light reflecting in his eyes, while the rest of the table looked like a small academic disaster site. Books lay open in uneven stacks, some face-down like they'd fainted mid-sentence.

Sheets of paper overlapped each other in chaotic layers, half-covered diagrams and scratched-out equations peeking from underneath newer attempts.

Pens and pencils rolled lazily whenever he shifted, tapping softly against the mahogany surface.

A mug of long-forgotten tea sat to his right, cold and abandoned, a thin film forming on top like even the liquid had given up.

He was studying.

The fact hung in the air like an accusation.

For the first time since his reincarnation, Sebastian was forced to do homework, and the universe clearly found this hilarious.

He dragged a hand down his face, fingers stopping at his jaw as he stared at the question on the screen again, as if it might change if he glared hard enough.

If one thousand dualflow users fought a single Vespera user, who would win?

It looked simple.

That was the trap.

Belle had written it in such clean, harmless wording that half the class probably smiled when they first read it. A theoretical exercise. A neat little comparison problem. Something you could argue about over coffee and feel clever afterward.

It was a nightmare.

Every variable had been locked down with surgical precision. All fighters had identical skill levels. Identical affinities. Identical combat intelligence. Perfect coordination. No environmental advantages. No psychological warfare. No exhaustion factor. Just energy versus energy, structure versus structure, system against system.

Sebastian tapped his pen against the table in a slow, arrhythmic beat.

A thousand dualflow users.

One Vespera user.

On paper, the math tried to look obvious. Dualflow was one hundred times stronger than mana. Vespera was one hundred times stronger than dualflow.

Stack enough dualflow together and the numbers seemed to tilt. One thousand was ten times one hundred. The crowd should crush the individual. Arithmetic suggested a landslide.

But arithmetic was lying.

He'd seen Vespera.

Not diagrams. Not descriptions. Not Belle's lecture voice wrapping it in analogies. He had seen it erupt into the world like reality itself had flinched. Dualflow, even at its best, still felt like a current moving through a person. Vespera felt like the person had become the source code of the current.

He scribbled in his notebook, lines jagged.

Energy density ≠ additive.

He underlined it three times.

The problem wasn't quantity. It was scale.

A thousand candles didn't become the sun. A thousand rivers didn't invent gravity. There was a threshold where stacking stopped mattering because the structure of the thing on the other side wasn't playing the same game anymore.

He leaned back in his chair, staring at the ceiling.

"One Vespera user," he muttered, "rewrites the battlefield."

He imagined the thousand dualflow users moving perfectly in sync, a green storm of power crashing toward a single figure standing still. In any normal framework, the wave would swallow the point. Momentum would decide the outcome.

Except Vespera didn't meet force with force.

It imposed.

The image in his mind warped. The wave hit—and instead of breaking the figure, it bent around them, like reality itself had decided which side it belonged to.

He exhaled slowly.

To his eyes, it seemed like a Hydrogen bomb VS baby situation.

The phrasing was crude. He wrote it down anyway, then stared at the words, half-horrified, half-satisfied. It captured the emotional truth even if the academic version would need polishing.

Still, doubt gnawed.

He had bias. Personal experience colored judgment. Belle would tear him apart if he submitted an answer built on vibes and trauma instead of reasoning. The whole point of the assignment was to force them to confront scale without leaning on instinct.

He turned back to the screen and started typing.

While numerical superiority suggests a collective victory, Vespera operates on a different ontological tier than dualflow…

He stopped.

"Ontological tier," he muttered. "I sound insufferable."

He kept typing.

Time blurred into the scratch of pen and the soft clack of keys. He built the argument piece by piece: energy compression, field dominance, interference collapse. Dualflow could stack output, yes, but it still obeyed interaction laws.

Vespera didn't amplify within the system. It altered the system's baseline. A thousand coordinated attacks would still be interpreted through the Vespera user's imposed framework.

He drew a diagram of overlapping circles, then scratched it out. Drew a spiral. Scratched that out too.

His brain felt like it was chewing glass.

He groaned quietly and let his forehead drop onto the table. Papers crinkled under the impact.

"I'm going to jump," he whispered to the wood.

He meant it academically.

Probably.

The room was silent except for the faint hum of the laptop fan. The air smelled like paper and ink and the ghost of tea.

Outside the window, night pressed against the glass, thick and quiet. He had been at this for hours. His thoughts were looping now, chasing the same conclusions in slightly different clothes.

Vespera wins.

But how would it win in a way that would survive Belle's red pen?

He pushed himself back up, eyes burning, and read his draft again. It felt flimsy. He could see the gaps, the places where he'd leapt instead of bridged. He hated that feeling. It was like knowing a wall existed but refusing to admit you hadn't climbed it yet.

He reached for his pen again.

Arms slid around him from behind.

He froze.

Something soft pressed into his back, warm and unmistakably human. The scent of coffee and soap and Belle wrapped around him before her voice did.

"You're still alive," she murmured near his ear. "That's impressive."

Sebastian's shoulders dropped an inch. "Barely."

She leaned more of her weight onto him, chin hovering near his shoulder as she peered at the screen. A strand of her hair tickled his neck. He didn't move.

"Homework?" she asked, though the question carried the lazy confidence of someone who already knew the answer.

"You're evil," he said.

"I assigned a theoretical exercise."

"You assigned a psychological weapon."

Her soft laugh vibrated against his back. "Are you tired?"

"Yes."

"Do you want the answer?"

He closed his eyes for half a second.

The temptation was obscene. She could end this in one sentence. She could point to the exact hinge of the problem, the missing brick, the elegant logic that would snap everything into place. Relief hovered right there, within reach.

He shook his head.

"If I take it," he said quietly, "I'll feel stupid."

Belle was silent for a moment. Not offended. Not surprised. Just listening to the shape of the statement.

"You won't," she said. "But I understand."

He huffed. "That's worse."

Her arms tightened briefly in what might have been a hug disguised as balance. "It isn't due for another week," she said. "You can do it tomorrow."

"I'm close."

"You're delirious."

"I'm productive."

"You wrote 'Hydrogen bomb VS baby' in your notes."

He jerked upright. "You read that?"

"It's hard to miss. It's underlined."

He groaned. "It's a placeholder."

"It's honest," she said. "But you're done for tonight."

"I'm not—"

Without waiting for his argument to finish forming, she shifted her grip, hooked her arms more securely around his torso, and stood.

The chair scraped back.

Sebastian yelped. "Belle—"

The world tilted.

She lifted him like he weighed nothing, laptop glow sliding across the room as the table fell away. Papers fluttered in the disturbance, one sheet drifting lazily to the floor. He grabbed instinctively at her sleeve, more startled than actually afraid.

"You're kidnapping me," he said.

"I'm putting you to bed," she corrected.

"That's worse somehow."

She carried him the short distance to the bed with unbothered ease and dropped onto it sideways, dragging him with her.

The mattress dipped, blankets tangling around their legs. Before he could protest again, she rolled, pulling him against her chest and wrapping herself around him with the casual finality of someone claiming a pillow.

He blinked at the wall.

"This is illegal," he muttered.

"You were going to jump," she reminded him softly.

"Academically."

"I'm preventing an academic tragedy."

Her hoodie was warm against his cheek. Her heartbeat was steady. The room felt different from here, smaller, quieter, the frantic edges of the desk and screen replaced by fabric and breath.

His brain tried to keep spinning, clinging to unfinished arguments and half-built diagrams, but the momentum was slipping.

"You didn't answer," he mumbled.

"About the homework?"

"Yeah."

She was quiet for a beat.

"The interesting part," she said finally, voice low and drowsy, "isn't who wins. It's why people assume numbers should."

He frowned slightly, processing even as sleep tugged at him.

"Tomorrow," she added. "You can fight it tomorrow."

Her hand slid up his back in a slow, absent-minded line. Not soothing on purpose. Just there. The touch grounded him more effectively than any conclusion would have.

The laptop light still glowed across the room, a pale reminder of the battlefield he was abandoning. For once, he let it sit unresolved. The question would still be there in the morning. The thousand versus one. The river versus gravity.

Right now, there was warmth and the quiet certainty of being held in place.

His breathing matched hers without asking permission.

The last thing he thought, before sleep finally caught him, was that he'd win tomorrow. Not because the answer was easy, but because he'd wrestle it until it made sense.

And because, wrapped in Belle's arms like a stolen hour outside the world, the fight felt survivable.