The Dark Forest is yours now

"I see," Alex replied, nodding in understanding.

Edgar turned his gaze towards the horizon, as if gathering his thoughts. "Now, let me tell you about the eras of this world..."

Every millennium, coinciding with the arrival of a new batch of Lords, was marked as an era. It was initially a term used amongst Lords, but somehow, it had spread to the local forces and eventually became a universally recognized system of timekeeping. 

Each era represented the reign of a particular race, a testament to their overwhelming power. Eras were named after these dominant races – Angel Era, Sea God Era, Dragon God Era, Human Supreme Era, Demon Era, and so on.

As for the time before, when Astralon was still a primordial void, the Lords referred to it as the First Lord Era. The local forces, however, refused to acknowledge this, simply calling it the First Era.

No one knew for sure how many eras had passed. Perhaps only the gods held that knowledge.