C499 A Calamity as If It Were the End of the World

Ye Han was stunned.

Instead, an electronic voice resounded in his mind.

"Ding!" The seal will be opened, and the Demon Lord's World System will be activated! "

This sudden electronic voice stunned Ye Han for a moment.

The seal within the Demon Saber actually had a system sealed within?

Or was it a Devil-level System?

At this moment, a sharp alarm sounded.

"Warning, warning, warning