Chapter Text
The air in the National Training Center was kept at a precise 21°C, a climate-controlled sterility that Tobio usually found comforting. It was a temperature that demanded focus. But today, the air felt thick, heavy with the scent of floor wax and the low-frequency hum of a disaster waiting to happen.
Tobio adjusted the black sweatband on his right wrist for the twentieth time. Beneath the fabric, his Geometric Crown was thrumming. It wasn't a painful sensation, but a persistent, rhythmic pulse that vibrated against his radial artery—a Royal Blue heartbeat that didn't belong to him.
Across the court, the source of the interference was making a nuisance of himself.
Shouyou was currently vibrating in place, his orange National Team jersey a blur as he gestured wildly while talking to Hoshiumi. Even from thirty feet away, Tobio could see the flicker of Solar Orange light peeking out from the edge of Shouyou’s left sleeve. It was erratic, pulsing with a frantic energy that made the hair on Tobio’s arms stand up.
"Kageyama? If you’re ready?"
Yachi stood by the obsidian pillar of the Aura AI Interface, looking like she’d spent the last forty-eight hours vibrating on espresso. As the lead UI designer for the project, this was her big moment—the unveiling of a system that was supposed to revolutionize team chemistry by reading "spiritual resonance."
"It’s just a baseline scan," Yachi whispered, her eyes darting to the JVA officials hovering nearby. "The JVA wants to market the 'Soulmate Synergy' of the starting lineup. Since you and Hinata have the highest synchronized attack rate in history, they want your data first."
"It's a waste of time," Tobio grunted, though he stepped forward. He hated the way the scanner looked—like a hungry eye.
"I’ll go first! I’m faster!" Shouyou shouted, appearing out of thin air. Before Yachi could protest, he shoved his left wrist toward the red laser.
[SUBJECT A: HINATA, SHOUYOU]
[MARK DETECTED: THE RISING SUNBURST]
[STATUS: ACTIVE / OVERHEATING]
"Overheating?" Shouyou blinked, looking at his wrist. "Does that mean I’m gonna explode? Like a supernova?"
"It means you're a dumbass," Tobio muttered. He pushed Shouyou aside and presented his right wrist. The laser swept over the Geometric Crown.
[SUBJECT B: KAGEYAMA, TOBIO]
[MARK DETECTED: THE GEOMETRIC CROWN]
[STATUS: ACTIVE / GRAVITATIONAL PULL DETECTED]
Yachi’s fingers flew across her tablet. "Okay, now the AI is cross-referencing your Soulmate Lines with your birth data for the 'Compatibility Forecast.' It's pulling from the deeper metadata layers—the stuff that's written in the stars, basically."
The machine didn't just beep. It let out a low, mechanical groan. The internal cooling fans kicked into high gear, a whirring sound that began to draw the attention of the rest of the gym. Sakusa stopped his stretching; Ushijima lowered the ball he was about to serve.
The jumbotron above the court flickered. It wasn't supposed to be connected to the Aura system, but the AI was designed to broadcast "Universal Truths" to the largest possible audience.
The screen turned a deep, bruised purple. Then, the text appeared in massive, white block letters:
They're deeply in love, their birth charts are perfectly aligned, and they bake elaborate desserts together in their spacious kitchen.
The silence that followed was so absolute it felt physical.
"Deeply in love?"
The voice belonged to Tsukishima. He was leaning against a ball rack, his phone already out, the camera lens catching the light. "My, my. I didn't realize the King had such... domestic aspirations. Tell me, Kageyama, do you wear the crown while you're frosting the cupcakes?"
"I don't bake," Tobio said, his voice dangerously low. His face was transitioning from its usual pale composure to a catastrophic, vein-popping crimson. "And I am not—"
"Elaborate desserts?" Shouyou was staring at the screen, his mouth hanging open. "Tobio, I can't even make toast without the fire alarm going off! And what's a 'spacious kitchen'?"
"The AI doesn't lie," Yachi whispered, her face pale as she stared at her tablet. "The birth charts... they're not just aligned. They're overlapping. It says here your souls are in a permanent eclipse."
"Fix it," Tobio commanded, turning on Yachi. "Delete the data. I am a professional athlete, not a—a pastry chef."
In his fury, he reached out to grab the terminal, but his hand missed. In the cramped space between the machine and the players, his bare skin brushed against Shouyou’s inner wrist.
The reaction was instantaneous.
It wasn't a spark; it was an explosion. From the point of contact, a wave of Amethyst Purple light erupted—a perfect, shimmering blend of Tobio’s Royal Blue and Shouyou’s Solar Orange. The color was so bright it washed out the gym’s industrial LED lights, casting the entire National Training Center in a sunset hue.
The sheer energy surge triggered the facility's safety protocols. Above them, the emergency sprinklers hissed to life.
Cold water began to rain down on the most expensive athletes in Japan. Tobio didn't move. He couldn't. His hand was locked to Shouyou’s wrist, the purple glow thrumming through his entire skeleton like a live wire.
Through the curtain of falling water, he looked at Shouyou. Shouyou was staring back, his hair plastered to his forehead, his orange sunburst mark shining through the wet fabric of his sleeve like a beacon.
"Tobio," Shouyou whispered over the hiss of the sprinklers. "Your ribs... they're glowing."
Tobio looked down. Through his soaked, white practice jersey, the silver script of his Soulmate Line was visible, burning like neon against his skin:
I will give you the most beautiful toss in the world, so long as you are there to hit it.
"Shut up, Shouyou," Tobio choked out, even as the amethyst light under their skin began to pulse in time with a single, shared heart. "The system... is definitely broken."