### Volume 2: Upper World

  **Chapter 6: Mara’s Blade**

  The bar was a husk—smashed bottles glinting under the dim emergency light, tables overturned, the air thick with spilled beer and the faint metallic tang of blood from outside. Sky sat in the corner booth, knees pulled up, back against the wall. His white pants were soaked red at the knees, black shirt torn open across the chest where the Heart had punched through earlier. The cuts from the blast still bled slow, thin lines tracing his arms and face like cracked porcelain. He didn’t bother wiping them. Just breathed. Slow. Shallow.

  The second heartbeat—**the Heart**—was quiet now. Not gone. Just… waiting. Like a predator that had eaten its fill and decided to nap.

  Outside, Japan burned.

  Demons crashed through streets like meteors, red eyes glowing in the dark. Devils landed on rooftops, wings folding as they scanned for prey. The sky was a torn canvas—gooey pink and blue chunks falling in slow motion, splattering buildings, cars, people. Screams echoed from blocks away, cut off by wet crunches.

  Sky stared at the knife on the table—his mom’s knife. The blade caught the flickering light, reflecting his face back at him. Eyes hollow. Cheeks streaked with tears and blood. He looked older than 15. Much older.

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  He whispered, “I’m sorry.”

  To who? Max. Frosty. Hiro. The kid he saved. Everyone. The blast. The fall. The Heart using him like a puppet. He didn’t know who was dead, but someone was. He felt it in his gut—like a hole where a friend used to be.

  The door rattled.

  Sky’s hand snapped to the knife—instinct. Spatial hum flickered, ready to push or pull.

  But it was just wind. The door creaked open, then shut.

  He exhaled, shoulders dropping.

  Then the radio in the corner—cracked but still on—crackled to life.

  A voice. Calm. Cold. Familiar from survivor feeds.

  “This is Mara. SS+ rank. Leader of the SS-rank party. The one who ended the Kyoto Rift Crisis.”

  Pause.

  “The Upper World has fallen. Trillions of demons and devils now walk Japan. The blame has been placed on one individual: Sky. The Vessel of the Demon Heart core. The one who broke the dimension.”

  Sky’s breath caught.

  “The execution order is given. I have forged a pact with Yami no Ken. I will hunt him. I will end him. For the world.”

  Static.

  Sky stared at the radio like it had stabbed him.

  Then he laughed—short, broken, bitter.

  “Of course.”

  He pushed up from the booth, legs shaky but holding. Knife in hand, he walked to the window. Outside, a devil landed on the street—tall, black-horned, sniffing the air. It turned toward the bar, eyes locking on him.

  Sky didn’t flinch.

  The Heart thumped once—soft, almost amused.

  Sky whispered to it, “Not yet.”

  He stepped outside.

  The devil lunged.

  Sky moved—Rift Step, spatial fold, knife flashing. The blade cut clean through the devil’s throat. Black ichor sprayed. The thing dropped, twitching.

  More came.

  Sky walked forward—knife low, eyes hard.

  The world was ending.

  And he was the reason.

  But he wasn’t done fighting.

  Not yet.

  The chapter ended.

  To be continued…