Chapter 4 : The Infinite Court
Dream Interface — Night of April 12th
The volleyball left his hands wrong.
Arisu tossed it — dream-tossed it, on the infinite blue-gridded court that stretched behind his sleeping eyes — and watched it arc three meters to the left of where he'd aimed. The grid lines tracked the trajectory in real-time, drawing a thin blue thread through the air that ended nowhere useful.
[Zone Architect] Serve attempt #14. Trajectory deviation: 34°. Serving Proficiency: 4%. Target zone missed.
He picked up another ball from the pile that had materialized at the baseline. The dream interface supplied an infinite number of them. No running to collect, no waiting, no partner required. Just the serve, the grid, and the cold system text telling him what he already knew.
Fourteen attempts. Zero clean serves. The dream doesn't build muscle memory — it builds mental patterns only. But the patterns are showing me exactly how bad my form is, and that's data I can use on the real court.
He tossed again. This time he watched the correction overlay — blue ghost-lines sketched over his arm showing the optimal contact angle, the toss height, the follow-through arc. His dream-body tried to match it. The serve crossed the net and bounced six feet from the intended zone.
[Zone Architect] Trajectory deviation: 18°. Improvement logged.
Better. Still terrible, but the deviation was shrinking. The system tracked everything with the dispassion of a spreadsheet, and Arisu was beginning to understand its philosophy: no encouragement, no punishment, just data. What you did with the data was your problem.
He let the serve practice go and turned to the other thing the dream interface had revealed.
The stat panel floated beside him when he focused on it — translucent, minimal, the same blue-white text as everything else in this space.
Stat
Value
Power
8
Control
11
Reflex
14
Perception
31
Endurance
9
Adaptability
22
Level 1. Rank F — Court Initiate. Mental Stamina: 40/40.
Court Dominion: Available. Zone Radius: 3 meters. Rule Slots: 1. Mark Capacity: 1.
Available Tier 0 Rules: Spin Amplification (req. Serving Prof 15%). Contact Highlight (req. Receiving Prof 10%).
Spin Amplification adds spin to my serves — barely. Ten percent increase at Tier 0. Contact Highlight shows me where the ball contacts the opponent's hands. Both require fundamentals I haven't earned yet.
Everything is locked behind skill. The system won't let me cheat. It gave me awareness and measurement tools, and it'll give me physics manipulation — eventually — but only after I prove I can play volleyball without it.
He scrolled through the interface. Zone rules were organized in tiers from 0 to 5, each tier gated behind higher proficiency thresholds and system levels. Tier 0 was the sandbox — barely functional tools that mimicked what a skilled player could do naturally. Tier 1 started bending physics. Tier 2 and above were still grayed out, descriptions hidden, requirements listed as ???.
The fundamental proficiency tracker was the most depressing panel:
Fundamental
Current
Serving
4%
Receiving
11%
Setting
3%
Spiking
2%
Blocking
6%
Digging
9%
Eleven percent receiving. That's my best stat. Eleven percent after four days of getting hammered in the receiving line and having Yaku tell me my platform is garbage eight hundred times.
At this rate, hitting 60% in any fundamental — the threshold for the F-to-E rank-up — will take months. And that's assuming I train every day, which I will, and that proficiency gains don't slow down at higher levels, which they probably do.
He closed the panels. The infinite court waited, patient and blue and empty.
The gap between what I know and what I can do is the entire story. I can see the destination. I just can't walk there yet.
He practiced serve form until the dream started to dissolve at the edges, reality pulling him back toward the bedroom and the alarm clock and the body that couldn't do what his mind demanded.
Nekoma Gymnasium — April 13th, Morning Practice
The gap looked different from this side of sleep.
Arisu stood at the back of the gym during the first-string warmup and watched Kuroo execute a read-block against Yamamoto's full-power cross. The sequence took less than two seconds — Yamamoto's approach, the arm swing, Kuroo's lateral slide and jump, hands pressing over the net at the exact point where the ball crossed. The timing was so precise it looked choreographed.
[Zone Architect] Opponent assessment — Kuroo Tetsurou. Estimated Blocking Proficiency: 78%. Reflex estimate: 67. Perception estimate: 71.
The numbers appeared unbidden. Arisu was still getting used to the system's habit of analyzing everything in his field of vision when Court Dominion was active — which, on a regulation court, was always now. The 3-meter zone clung to him like a second skin, too small to affect anything meaningful but large enough to feed him data.
Seventy-eight percent blocking proficiency. I'm at six. That's not a gap — that's a canyon. That's a decade of training compressed into numbers that make me want to sit down and stare at the wall.
On the other court, Kenma delivered a back-set without turning his head. The ball left his fingertips at a precise angle, traveling five meters to where Fukunaga was already airborne. The spike hit the floor untouched.
Kenma. Setting proficiency probably north of eighty. Has been playing with Kuroo since childhood. Reads the game at a level that makes my meta-knowledge look like Wikipedia summaries.
These are the people I need to keep up with. Not impress — I'm years from impressing anyone. Just keep up. Stay on the court. Don't get cut.
Morning practice ended. Most players headed to the locker room. Arisu stayed.
Lev Haiba stayed too.
The half-Russian first-year was at the far end of the court, serving into the empty opposite side with the determination of someone who'd been told his fundamentals were bad and had taken it as a personal challenge. His serves had power — the kid was 194 centimeters of raw athleticism with arms like scaffolding — but accuracy was a foreign concept. Balls flew into the net, over the back line, once nearly into the scoreboard.
Arisu set up at the adjacent service line. Fifty serves. That was the plan. Track every one with the system and crawl the proficiency counter upward.
Toss. Swing. The ball cleared the net and landed deep — too deep, back line by half a meter.
[Zone Architect] Serve #1. Out. Toss angle: 7° forward of optimal.
Toss. Swing. Net.
[Zone Architect] Serve #2. Net. Contact point too low on the ball.
Toss. Swing. In. Short, barely over, but in.
[Zone Architect] Serve #3. In. Velocity: 43 kph. Placement: Zone 5. Spin: minimal.
Forty-three kph. Yaku could receive that in his sleep. A middle schooler could receive that with a closed fist. But it was in.
Lev appeared beside him after serve number eighteen. Sweat dripping off his chin, silver hair plastered flat. He had a towel around his neck and the expression of a golden retriever who'd found another golden retriever.
"You're staying late too."
"Fifty serves."
"I'm doing a hundred." Lev paused. "Started at a hundred. I'm at... forty-something. I lost count."
"The net has a dent."
"That's from yesterday." Lev grinned, wide and unself-conscious. "Hey, Misaki-kun. Why'd you transfer to Nekoma? There's like eight other schools closer to your neighborhood."
Arisu tossed the ball. Caught it. Tossed again.
Cover story options: father's job. Academic programs. Proximity to a relative's house. All plausible, all boring, all lies that would need maintenance.
"I wanted to play volleyball somewhere it mattered."
Lev blinked. Then his grin got wider.
"That's the best reason I've ever heard. I told Coach I joined because I'm tall and people kept telling me I should."
"That's also a valid reason."
"Right? We should do extra practice together. I need someone to aim at. My receives are—" He made a sound like a deflating balloon.
"Mine are worse."
"Not possible."
Arisu served. The ball hit the top of the net cord, wobbled, and dropped on the wrong side.
"Okay, maybe possible," Lev said.
They finished their serves in companionable silence. Arisu hit thirty-one into the net out of fifty. The system tracked all of it.
[Zone Architect] Session complete. Serving Proficiency: 4% → 7%. Estimated serves to 40%: ~5,800.
Five thousand eight hundred serves. At fifty per day, that's a hundred and sixteen days. Four months.
He wrote "6000 serves" on a sticky note when he got home. Stuck it to the desk lamp where he'd see it every morning. The number was probably wrong — the system's estimates didn't account for improvement acceleration or skill coaching — but having a target was better than grinding blind.
His phone alarm was set for 5:30 AM. He changed it to 5:00. Thirty extra minutes meant thirty extra serves before morning practice.
The body protested. His calves still cramped at night. His forearms were a gallery of fading bruises. His right shoulder, which had absorbed four days of overhead serving motion it wasn't conditioned for, ached when he lifted his arm above his head.
Five thousand eight hundred serves. One at a time.
He fell asleep with the math still running. The dream interface opened like a door he'd left unlocked, and the infinite court stretched out beneath him, patient and blue and waiting.
During breakfast, between rice and miso, the system pulsed once at the edge of his vision:
[Zone Architect] Court Dominion available. Designate territory to begin.
His chopsticks paused over the salmon. Yui was drawing cats across the table. His mother was humming at the stove.
Not here. On the court. Where it matters.
He finished eating, grabbed his bag, and left for school thirty minutes early.
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