The seal took the form of a giant lock, improving the fortress multiple times over. It seemed that a divine race was empowering the prince.

“What is that?” Many became startled by the sudden influx of power.

This didn’t seem to be a shortcut or a temporary forbidden technique with side effects. This power boost was righteous and orthodox, stemming from his source. There was no danger in using this technique.

“The power of the sky spirits.” An elder said: “That’s their special power.”

Sky spirits were unique...