In one of Tokyo's tallest skyscrapers, Miya sat alone in a room swallowed by the night.

  The only light came from the computer screen in front of her. Her eyes were fixed on the glow, her fingers dancing across the keyboard like a melody.

  Her mission: to breach a security firewall that no one had managed to crack for years.

  For hours, she had been probing for weaknesses, diving deeper with every line of code.

  But no matter what she tried, the wall stood firm.

  Every attempt was repelled by the system — as if the algorithms could predict her next move before she even made it.

  Such an advanced defense could only mean...

  Miya paused.

  She pulled her hands back from the keyboard and leaned into her chair.

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  The screen still glowed, but her mind was at war with its own thoughts.

  Tension gripped her.

  She glanced at the clock.

  The digital display read: 01:00.

  At that moment, a notification flashed on her phone screen.

  A message from an unknown number:

  "You have a new mission. Time is running out. We will find you. Be ready until then."

  Miya’s heart raced.

  This couldn’t be from her employer — it broke protocol. The format was wrong.

  And more than that…

  The message had been sent from another country.

  The number’s prefix wasn’t Japanese.

  Whoever it was — they knew her.

  Or maybe...

  It was a trap set by her enemies.

  She turned back to the screen.

  Her vision blurred.

  This was no longer just about breaking through a firewall.

  For the first time, Miya felt like she wasn’t just crashing into a system — she was crashing into her own walls.

  And now, she would have to protect those, too.