As Alexander was about to join the battlefield cleanup, withdrawing his gaze from the rewards, a sudden system notification appeared:
"Main Quest Officially Activated! Sweep the Ghost Realm and unify over 90% of the Horror World outside of the Mist World to complete the task.
Rewards: Control of the Horror Instance system, Mist Instance system, and command of the final battle at the River Styx!"
The abrupt system prompt left Alexander stunned.
He was uncertain about what this "final battle at the River Styx" referred to, but he could make a rough guess—it was probably the final confrontation with the Mist World.
As for control over the Horror Instance system, it meant that if he could unify the Horror World, he would gain control over its governing system. Though shocking, it was somewhat understandable.