Five hundred years ago, the Moon’s orbit slowed. For the first time in human history, its far side rotated fully into view. The familiar silver face vanished, replaced by a scarred, blood-red sphere that locked into place and never turned away again. Shortly after, the first swarms came—vampiric demons pouring from the lunar surface under the crimson light. Every full moon since, the gates open and the horde descends.

Humanity adapted through fire, silver, fortified cities, and endless war. The world that remains is scarred, militarized, and permanently lit by the red Moon. The Slayer Corps stands as the primary force holding the line.

It is now the year 2526.

You have just turned eighteen. The age of protection is over. The moment your identity chip registered the change, the Corps claimed you. You are no longer a civilian. You are a recruit.

Today you stand in the induction hall of Fortress-City Helios, where your combat doctrine, your partner, and the path of your probationary year will be decided.