Shadow Synchronization

The one who revealed himself was none other than Xiao Yin.

He stood in the center of the great hall, wearing that innocent expression the Slaughter King found exceptionally irritating. He even blinked.

The Slaughter King's grip on his sword suddenly tightened. His scarlet eyes fixed on Xiao Yin, disbelief flashing through them.

How had he possibly slipped in here without making a sound?!

What about the guards outside?

"How did you get in?!" The Slaughter King's voice was filled with fury and disbelief.

Xiao Yin shrugged, the smile on his face unchanged. "Take a guess?"

That flippant attitude instantly ignited the Slaughter King's already explosive rage.

Yet he was, after all, the consciousness of a fierce beast that had lived for countless years. He forcibly suppressed the urge to tear his opponent apart at once. His scarlet eyes darted rapidly as he reviewed the hall, Xiao Yin, and the earlier abnormalities in his mind.

Invisibility?

Such a masterful ability to conceal oneself—even he had nearly failed to detect it...

Unless it was an exceptionally special Martial Soul or Soul Skill. And the user had to be sufficiently powerful, as well as intimately familiar with the palace's patrol routes, to evade every watchful eye so precisely and infiltrate its core...

A figure abruptly surfaced in his mind—the Number 13 who had just left after receiving his orders!

Her Martial Soul... Shadow Bat!

Her Fourth Soul Skill... seemed to be Group Shadow Lurk?

She was responsible for delivering his commands and meeting with him. She had both the ability and the opportunity...

"Good... very good, Number 13!"

The Slaughter King's voice suddenly turned shrill and grating, filled with the furious rage and killing intent of betrayal.

"You dared betray me! You ungrateful bitch! I'll tear the two of you vermin into