The after-hours sessions started in Kai's second week. Most of the team cleared out by five, bags slung over shoulders, cleats traded for sneakers at the gate. The field went quiet in pieces, voices thinning until it was just the groundskeeper dragging the tarp and the sprinklers clicking on behind the outfield fence.
Kai stayed because Coach asked him to stay. Not an order. A question at the end of regular practice, delivered the same way every time: "Got twenty minutes?" As if Kai had somewhere else to be.
The bullpen was at the far end of the first-base line, behind a chain-link screen that had been repaired in three places with different gauges of wire. Daiki crouched behind the plate. Ōno stood to the side with the radar gun propped against his hip, writing numbers in a small notebook without looking up. The camera was the same one from Kai's first day, mounted on a tripod that had a Fujimoto Industries logo on the clamp. Beside it, an iPad on a folding stand showed a live feed of the mound, overlay graphics ticking along the edges. Lines, angles, numbers that meant nothing to Kai.
Coach stood behind the camera and said nothing while Kai threw.
The late sun was on his back. He could feel it across his shoulders and the base of his neck, the warmth pulling sweat out of his skin before the breeze dried it. The mound was packed clay and rubber, the rubber worn smooth on one side where the regular pitchers pushed off. His foot found a different spot. The rubber was wider than the one in Regensburg.
The ball left his hand and hit Daiki's mitt. Again. Again. Grip, windup, the stretch through his shoulder, release, the pop of leather. Kai threw the way he'd always thrown. His arm found a slot and the ball went where the slot pointed. Mostly.
After the set, Coach walked to the iPad. Tilted it toward Kai. Three pitches replayed on a loop, side by side. The overlay drew a line from his hand to the plate on each one, color-coded, and the lines didn't match. The release points wandered across a space the width of his palm. Three different arm slots. Three different pitches from the same windup.
"Which one felt best?" Coach said.
Kai looked at the three lines. The question didn't connect to anything he knew about throwing. He threw. The ball went fast. Beyond that, he'd never separated one pitch from the next.
He waited. Patient. The sprinklers hissed in the outfield.
"Which one was easiest?" Coach tried.
The middle one. Kai pointed at it. Not because he'd analyzed the mechanics but because his shoulder had been looser on that throw, the ball leaving cleaner, less effort for the same result.
Coach nodded. "Throw ten more. Try to make them all feel like that one."
Kai stepped back on the rubber. He didn't know what Coach expected him to do with that instruction. Replicate a feeling. Not a position, not an angle, not a number on a screen. A feeling in his shoulder.
He threw. The first three felt loose, his shoulder rolling through the same groove. The fourth hitched, his elbow dropping, and the ball tailed wide. Daiki shifted and caught it at the edge of his body. The fifth was clean again. By the end of the set, Kai's arm had found two versions of the same pitch, and he could feel the difference between them even if he couldn't have explained it.
Coach brought the iPad back. The overlay comparison showed his stride length varying by a gap Kai could see without the numbers. Long, short, medium, long.
"Your body knows how to throw," Coach said. He tapped the screen where the velocity readings sat in a column, all within a few ticks of each other. "It doesn't know how to throw the same way twice. We're teaching consistency, not velocity. The velocity is already there."
Daiki pulled off his mitt and flexed his catching hand. His palm was red from the center to the heel. He didn't say anything about it.
Coach was already turning the iPad back to review something else, his face lit by the glow. He said something to Ōno about tomorrow's schedule and walked toward the batting cage without looking back.
The session was over. Daiki was pulling off his shin guards. Kai should have followed Coach toward the gate, or at least picked up his towel from the bench. Instead he stayed on the rubber. The ball was still in his hand.
He threw one more pitch into the net. Not hard. Just finding the slot, the one Coach had asked about, the one that felt easiest. The ball hit the backstop and dropped into the dirt. He picked up another from the bucket. Threw again. Same feeling in the shoulder, the clean roll, effort without strain. A third. A fourth. The fifth one hitched slightly and he stopped.
His hand stayed open for a moment after the last release, fingers spread, palm facing the net. Then he closed it and walked to the bench.
He pressed the towel against his face. The cotton smelled like the detergent Haruka used, floral and unfamiliar, nothing like what his mother bought.
On the way to the main gate, he passed the batting cage.
Goro Takagi had a bucket of balls on his hip and a voice that carried without trying. He was feeding pitches to Eguchi, the first-year who'd arrived the same week as Nakagawa. Big kid, lefty, built like he'd been assembled from spare parts that were each individually the right size but didn't quite agree with each other. His shoulders were wide but his hips were narrow and his swing came from everywhere at once.
The bat speed was real. Kai could hear it, the whip of the barrel through the zone, a sound different from the other hitters he'd watched. But the ball wasn't there for most of them. Eguchi swung through air twice, connected on the third, and the ball hit the back net hard enough to shake the frame. Swung through, swung through, foul tip, air, and then another one that sounded like a gunshot off the barrel and rattled the chain link behind the far post.
Takagi tossed another ball without comment. Camera was running on the cage too, the same setup. Another iPad propped on a stool, recording Eguchi's swing path.
After a round, Takagi called him out and showed him something on the screen. Eguchi's jaw was set. He nodded once, hard, and stepped back in. His shoulders were tight.
The side bullpen was fifty meters past the cage. Nakagawa was throwing to a first-year catcher Kai didn't know by name. Ōno had moved over here with the radar gun. Nakagawa's fastball popped the mitt at a speed that wouldn't have made anyone in Regensburg look twice. Slow. The ball moved, though. It ran and sank and the catcher shifted his whole body to catch it, mitt sweeping down and to the side like he was scooping something off the floor.
The curveball was different.
Nakagawa set, rocked, delivered. The ball left his hand at the catcher's eye level and fell. Not curved, not spun sideways. Fell. A long, looping arc, top to bottom, a break that looked wrong, like the ball had forgotten what baseballs did. The catcher's mitt went up, then down, then missed. The ball hit the dirt in front of the plate and kicked sideways into the backstop screen.
Kai's fingers twitched against the chain link. His arm knew that pitch. Not the mechanics of it, not how Nakagawa's wrist turned. Just the shape of the movement.
Nakagawa waited for the ball back with the same expression he wore for everything. Quiet. Patient. No hurry anywhere in him.
A shadow crossed the dirt beside the mound. Coach had come from the main field, iPad under his arm. He stood beside Nakagawa and played back the last few pitches. Same patient questioning, same posture he'd used with Kai. "Where did you feel that one?"
Nakagawa answered in a dialect Kai couldn't follow. The words were Japanese but the sounds were different, vowels stretched and consonants dropped, a version of the language that existed in a place Kai hadn't been.
Coach nodded and said something back. Low, specific, private.
Kai watched Coach walk back toward the main field. He moved from the mound to the cage to the bullpen at the same unhurried pace, the same posture at each stop, the iPad tucked under his arm like a clipboard he'd been carrying for years.
The cameras were better than anything else on the field. The Fujimoto logo on the tripod clamp, the same logo on the battery pack for the second camera. Good equipment for a school that didn't have matching batting helmets.
At dinner, Coach's hands were still moving.
Haruka had made something with pork and ginger that steamed from a wide dish in the center of the table. Kai had learned to serve himself quickly, before the serving chopsticks made it to Daiki, who ate with the steady efficiency of someone refueling.
Coach picked up a piece of pork, chewed twice, and turned to Daiki. "The third set tonight. His arm slot dropped on the last four pitches. Was the release point moving to you, or was it consistent?"
Daiki's chopsticks paused.
Haruka didn't say a word. She looked at Coach across the table. One look, steady, unhurried, with years of precedent behind it. Her mouth was set. Her chin was level. She didn't need to speak.
Coach stopped mid-sentence. He picked up his chopsticks, and the question about release points dissolved into the sound of five people eating.
Daiki's face stayed neutral. His attention returned to his rice with the steady focus of someone who'd learned not to be part of this exchange. The boundary existed because someone maintained it, and it wasn't either of them.
Kai ate. The ginger was sharp and the pork was tender and the steam from the dish fogged the window behind Haruka's shoulder. Outside, the neighbor's dog barked once and stopped. The kitchen smelled like sesame oil and rice and the particular warmth of a house where someone had been cooking since before anyone came home.
Haruka asked how practice went.
"Promising," Coach said.
Kai didn't know which of the three sessions he was talking about. He didn't know if Coach did either.