The main laboratory smelled of ozone, copper, and something that had been dead for a very long time.
The silence was absolute, save for the hum of the cooling vents, pressing against my eardrums like deep water.
We stood in the center of the room, our breath misting in the cold air. The stone throne was empty. The mop and bucket were still there, guarding the spilled soup like a sad monument to a failed meal.
"They're gone," Naruto whispered, his voice echoing off the limestone walls. "The Snake guy ran away."
"He didn't just run," I murmured, scanning the room. "He evacuated. Look at the desk. No papers. No scrolls. Just dust."
A single empty test tube rolled across the stone floor—clink, clink, clink—stopping against the leg of the throne.
Whoosh.
A sudden gust of wind slammed the heavy blast doors open.
A figure stumbled in. She was a mess.
It was the woman with the wings—Kagerō. But she wasn't flying anymore. Her beautiful chakra wings flickered and sputtered like a dying fluorescent bulb. Her clothes were scorched, her skin covered in soot and burns from Jiraiya's fire style. She was dragging one leg, her breath coming in ragged gasps.
The smell of singed feathers and ozone rolled off her in waves, overpowering the copper scent of the lab.
"Kabuto-sama!" she screamed, her voice cracking. "We slowed him down! We hurt the Sage! I need... I need healing!"
She collapsed near the center of the room, reaching out toward the empty throne.
"Kabuto-sama?"
Silence answered her. Just the drip-drip-drip of condensation hitting the floor.
It sounded indistinguishable from the blood dripping from her fingertips—plip, plip, plip.
She looked up. She saw us.
Her eyes went wide. Then they narrowed into slits of pure, desperate hatred.
"You," she hissed. "Leaf trash. You... you took them away. You made them leave!"
"We didn't do anything!" Naruto shouted, stepping in front of me and Sasame. "They ditched you! Because they're jerks!"
"LIAR!"
Kagerō screamed, and the last of her life force ignited.
She didn't transform. She didn't fly. She just moved.
She blurred across the room, slamming into Naruto with the force of a truck.
Wind whipped my hair back, stinging my eyes with grit and ash shaken loose from her clothes.
"Rasengan!" Naruto yelled, reacting on instinct.
The swirling ball of blue chakra formed in his hand. He slammed it into her stomach.
BOOM.
The impact was devastating. Kagerō flew backward, smashing into a pillar. The stone cracked, dust raining down. The impact made a sound like a wet sandbag hitting concrete—a dull, meat-heavy thud that made me flinch. She slumped to the floor, blood coughing from her lips. It splattered black against the grey limestone, steaming slightly in the cold air.
"Stay down!" Naruto panted, his hand still smoking from the chakra discharge.
Kagerō laughed. It was a wet, gurgling sound.
"You think... you won?" she wheezed.
She raised a trembling hand. A thin, almost invisible thread of blue chakra connected her chest to Naruto's. It pulsed rhythmically.
Thump-thump. Thump-thump.
Naruto's pupils constricted and dilated in perfect sync with the rhythm, his biology hijacked by a ghost signal.
Naruto froze. He clutched his chest, his eyes widening.
"What... what is this?" he gasped. "My heart... it feels heavy."
"Chakra Thread of Fate," Kagerō whispered, a cruel smile spreading across her bloodied face. "A Fūma secret art. Our hearts beat as one now, boy. If I speed up... you speed up. If I stop..."
She reached into her pouch and pulled out a kunai. She turned the blade toward her own throat.
The metal pressed into her skin, drawing a single, bright bead of blood that raced down her neck like a tear.
"...you stop."
"NO!" Sasame screamed.
Naruto fell to his knees, gasping for air. His face turned pale. "Sylvie... run..."
The room seemed to tilt. The sound of the factory, the drip of the water, the rasp of Kagerō's breath—it all faded into a high-pitched ringing. Gravity seemed to double, dragging my stomach down toward the floor while my head spun like a top.
I looked at Naruto. He was dying. Because he was tied to a ghost.
No.
Fear didn't paralyze me. It burned. It started in my chest, hot and white, and shot straight up to my eyes.
Focus.
I didn't feel the surge of water like last time. I didn't feel the overwhelming ocean. This was sharp. Precise. Like a scalpel made of light. Pressure built behind my eye sockets, a sudden, sharp spike of pain that felt like a nail being driven into my skull.
My vision shifted. The world turned grey.
No veins bulged around my temples. My eyes just went flat, stark white.
The room lost its depth, flattening into a sketchbook of high-contrast lines and pulsating chakra veins.
I saw it.
The thread. It wasn't just chakra; it was a frequency. A vibration connecting their life forces. It was tangled, knotted, desperate.
I reached into my pouch. My fingers closed around the cold metal of the kunai Sasame had given me—the one Arashi had etched.
Twist. Flick.
I moved. I didn't think about the steps. I just was there.
I slashed the air between them.
The blade caught the invisible thread. The seal on the handle flared gold.
PING.
The sound was like a violin string snapping.
The blue line severed. The backlash whipped through the air, dissipating into sparks.
The air rippled where the thread had been, smelling sharply of burnt sugar and static electricity.
Naruto gasped, sucking in a huge breath of air as if he'd just surfaced from deep water. "HAH!"
Kagerō's eyes widened. The connection was gone. She slumped back, the kunai falling from her hand. She stared at me, then at the ceiling, her life fading not by suicide, but by exhaustion.
"How..." she whispered. And then she was gone.
The white light in my vision vanished.
Drip.
Warmth hit my cheek.
I blinked. My eyes burned. I touched my face. My fingers came away red. I was bleeding from my tear ducts.
It felt like hot wax running down my cheeks, thick and slow, contrasting with the cold sweat on my forehead.
"Sylvie!"
Naruto scrambled over to me on his hands and knees. He grabbed my shoulders, shaking me slightly.
"Your eyes!" he shouted, panic in his voice. "They're bleeding! Are you okay? Did it hurt? Why did you do that?!"
I looked at him. He was alive. His heart was beating his own rhythm.
My knees gave out. I collapsed against him, burying my face in his orange jacket. It smelled of ramen and dust. The rough fabric of his jacket scratched my skin, grounding me, pulling me back from the grey world into the real one.
"I'm fine," I whispered, my voice trembling. "Just... don't die, you idiot."
Naruto hugged me back, fierce and tight. I could hear his heart beating against my ear—fast, erratic, but finally, wonderfully, his own.
"I won't," he promised. "Believe it."