My ghoul system
When the Rotoro arrived, the world as we knew it ended-twisted horrors of sinew and bone, with razor-sharp claws and blood-red maws that brought death to every corner of the Earth. No one knew whence they came or why they had descended-only that they hungered for flesh and destruction.
For Mark, it was when he was eight. His parents vanished in that first wave of the invasion, leaving him with just a blood-red ring that they had given him. Alone and terrified, Mark grew up in a broken world dominated by chaos and survival, holding on desperately to every word his parents had uttered in their dying moments: "The ring will protect you when the time comes.".
A decade later, mankind barely hangs on to existence in fortified enclaves, under the relentless attacks of Rotoro. On the eve of his mandatory transfer to a no-mercy military camp, which is designed to turn him into a soldier capable of fighting the alien menace, Mark's life is forever changed. That night, as he stared at the blood-red ring-a relic he had never been able to remove flared with an otherworldly light, sending searing pain through his body. A voice rings in his mind, "You have unlocked the Ghoul System.