Chapter Text
The hum of the physical therapy room was a cold, sterile drone that Rin had come to despise. Overhead, the fluorescent bulbs buzzed with a low, relentless vibration that seemed to sink directly into his temples, compounding the dull throb behind his eyes.
"Controlled release, Itoshi-kun," the physical therapist said, his voice maddeningly patient as he tapped the digital timer on his clipboard. "Three seconds down. Keep the hip stable. Don't let the quadriceps compensation take over."
Rin didn't answer. He couldn't. His teeth were gritted so hard his jaw throbbed, a single bead of cold sweat tracing a slow line down his temple and dripping off the point of his jaw. His bare right leg trembled uncontrollably under the tension of the thick black rubber band looped around his ankle. The jagged, pink surgical scar running down his knee pulled like a wire set on fire—a tight, binding ache every time he tried to force the joint past twenty degrees.
Bend it, Rin commanded himself, his knuckles turning chalk-white where he gripped the vinyl edges of the examination table until his fingers went numb. Move the damn leg.
His quadriceps gave out with a violent, humiliating tremor, and the rubber band snapped back.
"That's enough quad activation for today," the therapist said gently, unclipping the band from his ankle. "Progress after an ACL reconstruction is a slow incline. If you push past the joint's tolerance right now, you risk compromising the graft."
Rin sat on the edge of the mat, his chest heaving as he stared down at his bare foot. His uninjured left leg rested flat on the padded surface, solid and dependable, while his right leg felt like an alien attachment—stiff, swollen, and unresponsive. Every breath he took smelled of alcohol wipes and cold rubber.
Slowly, Rin swung his good foot off the edge, reaching for the pair of aluminum crutches propped against the examination table. He pushed himself up into a standing position, taking the weight entirely on his left side while his right leg hung stiffly in its heavy, black-and-silver hinged brace.
"Remember to elevate and ice for forty-five minutes when you return to your room," the therapist reminded him, already noting down metrics on his digital tablet.
Rin didn't offer a nod or a parting glance. He turned his back to the examination area and began the long, agonizing shuffle down the corridor.
The residential hallway was completely deserted. The faint, muffled sound of whistles and squeaking rubber soles echoed up through the floorboards from the lower pitch levels, a constant reminder that the rest of Blue Lock was moving at full speed while he was anchored in place.
When he reached his room, Rin kicked the heavy door shut behind him with his good heel, the latch clicking into place with a hollow finality. He tossed the crutches against the wall, where they clattered loudly against the panelling, and dropped heavily onto the edge of his mattress.
The space felt noticeably colder than usual.
On the small nightstand beside the bed, the tablet sat black and silent, its glass screen reflecting only the dim light filtering through the blinds. No tactical footage was looping. No annoying, breathless voice was breaking down defensive line coverage or asking about defender hip alignments. Just the quiet, monotonous hum of the air conditioning unit circulating freezing air across the small room.
Rin leaned his head back against the headboard and closed his eyes, his breathing slowly settling into a raspy, uneven rhythm. His fingers twitched against his thigh, his mind automatically trying to map out pitch geometry and spatial vectors, but the absolute quiet in the room offered no resistance to bounce off of.
He reached out, his hand hovering over the dark tablet for a fraction of a second before pulling back.
"Unbelievable," Rin growled softly into the dark, empty space, his raspy voice laced with sharp contempt. "Give a lukewarm idiot an inch, and he thinks he can run on his own."
He threw himself back against the sheets, staring unblinkingly up at the dark ceiling tiles. He refused to admit the quiet bothered him. He just loathed unfinished business—and he had handed over a weapon that he fully intended to see executed. So he lay there in the cold silence, listening for the sound of approaching boots in the corridor that hadn't come.
- ───୨୧───•
The first pale, icy light of dawn cut through the residential wing’s upper balcony, casting long, stark shadows across the soundproofed observation window. Outside, the sharp chill of early morning hung heavy over the indoor pitch, where the floodlights hummed to life one by one, illuminating the vast green turf below.
Rin stood stiffly near the railing, the cold metal of his crutches biting into his palms as he leaned his weight heavily onto his uninjured left leg. His right knee, bound tightly inside a black hinge brace and wrapped in a cold compression machine sleeve, throbbed with a persistent, dull ache—a constant, infuriating reminder of his forced immobility.
Down on the field, the sharp squeak of cleats against damp turf and the shrill blast of Ego’s whistle echoed faintly through the reinforced glass.
Rin’s dark eyes scanned the green expanse with cold, clinical precision. The rest of the Blue Lock players were already moving through high-speed spatial transition drills, their bodies cutting across lines and vectors. But Rin’s gaze didn't wander aimlessly. It locked instantly onto a single silhouette near the center circle.
Even from high up behind the tinted glass, he couldn't mistake him.
It was that distinct, stubborn tuft of hair sticking up at the back of his head—a stupid, recognizable sprout bouncing with every sharp, frantic step Isagi took across the pitch.
Rin’s jaw tightened as he watched Isagi receive a pass from Karasu. Down on the field, Isagi’s head turned, his eyes searching the open lanes. But to Rin’s trained, merciless vision, the movement was painfully flawed. Isagi was anticipating the open space, but he was reacting half a second too late—his body hesitating just enough for the backline defender to adjust his hips and shut down the interior lane.
Still lukewarm, Rin thought bitterly, his knuckles turning chalk-white as his fingers clenched tighter around the crutches' handles. You’re reading where they move instead of forcing them where you want them. Look at the center-back’s shoulder alignment, you idiot.
High above the field, grounded and trapped in his own broken body, Rin watched that familiar sprout bob across the turf. A dark, volatile fire simmered in his chest.
"Useless sprout," Rin muttered under his breath, his raspy voice barely a whisper against the cool glass. "If you're going to run on my turf... at least do it right."
Down on the turf, the sequence reset. Isagi called for another ball, his chest heaving as he repositioned near the center circle. High above, Rin’s jaw tightened until the muscles leaped beneath his skin. He couldn't stand watching it any longer—the agonizing half-second delay, the tentative read of the backline, the sheer waste of spatial vision. Every movement Isagi made was a sloppy, lukewarm execution of the concepts they had picked apart on the tablet screen hours before.
"Idiot," Rin spat softly against the chill of the glass.
Sick of the sight, Rin shifted his weight, digging the rubber tips of his crutches into the polished floorboards to turn himself around. He had no intention of lingering like a ghost on the sidelines, watching a lukewarm sprout fumble through basic spatial vectors. He shoved off from the railing, adjusting his grip on the cold handles, ready to retreat down the quiet residential corridor.
He pivoted on his uninjured left foot, his body turning away from the vast green pitch below.
Then, completely by chance, his gaze flicked down toward the field one last split second before he cleared the glass—and caught Isagi mid-turn.
Down on the turf, right as Karasu adjusted his stride to launch the next pass, Isagi didn't look at the ball. Instinctively—as if feeling the suffocating, heavy weight of a gaze pressing through the soundproofed pane—Isagi wiped a streak of sweat from his brow and snapped his head upward toward the dark tint of the balcony.
Their eyes locked instantly.
Through thirty yards of distance, the glare of the bright floodlights, and the heavy, reinforced glass separating the pitch from the residential wing, the collision was immediate and sharp.
Isagi froze for a fraction of a second in the middle of the center circle, his blue eyes widening slightly in shock as he spotted the dark, sharp silhouette standing at the upper railing.
Rin’s stomach tightened with a surge of cold, bitter anger. He hadn't meant to be caught watching. He hadn't wanted to give the sprout the satisfaction of knowing his eyes were on him.
For one agonizing beat, neither of them broke contact. Isagi stood grounded on the green turf, sweat gleaming on his throat, looking up with a sudden, dangerous intensity in his expression. High above, Rin glared down through the glass, his dark green eyes narrowing into cold, unforgiving slits.
Refusing to hold the glance a second longer, Rin broke the connection. He sneered under his breath, turned his shoulders sharply away from the window, and shoved himself forward into the dim hallway.
The heavy double doors swung shut behind him, cutting off the view of the pitch entirely. As Rin limped down the dark, sterile corridor, the hollow, rhythmic thump-clack of his crutches echoed off the bare walls, leaving Isagi’s lingering gaze far behind on the turf.
- ───୨୧───•
The walk back down the residential corridor felt twice as long as usual. The hollow, rhythmic thump-clack of Rin’s crutches echoed off the bare walls, cutting through the heavy silence of the facility. Every step on his uninjured leg forced a dull, throbbing shockwave up into his braced knee, making his jaw ache from how hard he gritted his teeth.
Reaching his room, Rin kicked the heavy door open with his good foot, shoved his way inside, and let it latch shut behind him. The space was freezing—the air conditioner circulating a steady, icy drone that sank straight into his skin.
He tossed his crutches against the wall. They clattered sharply against the panelling before clinking onto the floorboards. Rin didn't care. He dropped heavily onto the edge of his mattress, letting out a ragged, exhausted breath as his right leg extended out stiffly in front of him.
For a long moment, he just sat there in the dim, grey ambient light. His eyes flicked over to the nightstand. The tablet lay black, flat, and silent. No match footage was looping. No annoying, breathless voice was asking about defender hip alignments or spatial vectors.
Unbelievable, Rin thought, his fingers twitching against his thigh. The sprout gets one clean execution and thinks he can just run off.
To force his mind off the quiet, Rin leaned forward, reaching for the water bottle resting on his desk, but even the small effort felt suffocatingly heavy. Instead, he grabbed a fresh ice pack from his mini-cooler and strapped it over his throbbing knee brace, pulling the velcro straps tight until the cold bit sharply through his sweatpants. He picked up the dark tablet, swiped it open, and tried to force himself to review tactical footage alone.
He didn't make it past two minutes.
The sheer physical exhaustion from his morning ACL therapy—combined with the mental strain of watching Isagi fumble through drills on the pitch—finally dragged him under. His eyelids grew heavy, his raspy breathing slowed into a steady rhythm, and his head slumped back against the flat pillow. The tablet slipped from his fingers, falling face-down onto the sheets beside his leg.
Within minutes, Rin was asleep.
He didn't know how much time had passed. The room had grown darker, the pale morning light fading into deep, cool shadows.
- ───୨୧───•
Then, a few hours later, or however many hours of time passed by—
A sudden, sharp shock of ice-cold metal pressed directly against the center of his forehead.
Rin’s eyes snapped open. Muscle memory took over before his mind could even clear the haze of sleep—his jaw clamped shut, and his right hand shot out like a striking whip. His fingers locked around a warm, solid wrist.
"Woah—hey! Take it easy, Rin!"
Rin’s dark green eyes narrowed into deadly slits as his vision focused. Standing right beside his mattress, leaning low over the bed, was Isagi. He was still in his damp training kit, a white towel draped around his neck, a breathless flush dusting his cheekbones. In his other hand, he held a small, sweat-beaded can of Pocari Sweat—the frozen aluminum edge of which had just been pressed right between Rin’s eyebrows.
"Let go of me, sprout," Rin growled, his raspy voice dangerously low as he shoved Isagi's wrist away, though his own grip trembled slightly from the sudden surge of adrenaline. Sitting up abruptly, a sharp, throbbing ache shot through his braced knee. He glared up at Isagi. "What the hell do you think you're doing sneaking into my room?"
"I wasn't sneaking," Isagi said smoothly. He stepped back, tossing the cold can into his other hand before setting it on Rin's nightstand, then wiped a streak of sweat from his forehead with the back of his wrist. "The door was unlocked. You looked like you were burning up in your sleep, so I thought I'd wake you before you choked on your own pride."
Rin flicked a cold glance at the sweating can on the table, then locked his unyielding gaze back onto Isagi's face.
"I saw you on the pitch," Rin spat out, his voice laced with sharp contempt. "Your stride timing was a mess. You reacted half a second too late on the interior cut."
Isagi didn't flinch. Instead, a small, dangerous smile broke across his face. He grabbed a folding chair, turned it around, and sat down right beside the bed, resting his forearms against the backrest.
"Yeah, I know," Isagi said quietly, his blue eyes locking onto Rin's with unyielding intensity. "That's why I'm here. Pick up the tablet, Rin. Show me where I messed up."
Moments later, the harsh blue glare of the tablet screen illuminated the dark room, casting sharp, cool highlights across Rin’s features as the match footage looped in slow motion.
Isagi didn't stay back on the chair for long. He slid down onto the floor right beside the mattress, sitting close enough that the heat radiating off his body was immediate.
"Stop skipping frames, sprout," Rin growled, his raspy voice coarse after hours of quiet instruction. "Go back to minute fourteen. Look at the center-back's hips."
Isagi leaned closer, bringing his face inches from Rin’s shoulder as he tapped the rewind button. The space between them shrank until the damp fabric of Isagi’s kit brushed flush against Rin’s arm.
"Here?" Isagi asked, pointing directly to the glass grid. "He’s committing his momentum to the left lane early."
"Because you're baiting him like an amateur," Rin snapped, though he made no move to pull away from the contact. Without breaking his gaze from the screen, he reached down and grabbed Isagi’s wrist, forcefully shifting his hand two inches to the right over the digital pitch. "Look at the half-space. If you delay your stride by a fraction of a second, he has to choose between collapsing or leaving the center open."
Rin’s grip around Isagi's wrist was calloused, firm, and surprisingly warm compared to the chill of the air conditioning. Isagi felt his own pulse jump beneath Rin’s fingers, but he didn't pull back. Instead, as Rin released his arm, Isagi let his hand settle naturally on the bed, his palm resting right over the cold outer casing of Rin’s knee brace.
Rin’s body went rigid. His jaw tightened, a faint flicker of tension passing over his features at the sudden, grounded touch directly over his surgical graft.
"What do you think you're doing?" Rin muttered dangerously, his dark green eyes flicking sideways to glare down at Isagi’s hand resting against his leg.
Isagi didn't pull away. He kept his eyes locked on the tactical screen, his thumb unconsciously applying a slow, steady pressure against the rigid frame of the brace—a quiet anchor against Rin's frustration.
"I'm listening," Isagi murmured, his voice steady and devoid of doubt as he leaned in closer to match Rin's line of sight. "Show me where the backline collapses next."
Rin stared at Isagi’s profile for a long beat—at the quiet intensity in his eyes and the steady weight anchored over his brace. Letting out a low, bitter huff through his nose, Rin refused to acknowledge the warmth bleeding through the heavy fabric of the brace and swiped his thumb across the screen to the next play.
"Pay attention, idiot," Rin rasped, his shoulder resting flush against Isagi’s as they dive back into the footage.