GRC has been pushed to the brink by the endless stream of creatures and incidents from other worlds. It can no longer protect the darkness behind this world, and has even cast its own desires into that darkness.
But one unusual incident involving another world released a contained individual that even they had long since forgotten.
Legend has it that he came from the human world, yet was far more sinister than Hell. After centuries in confinement, he seems to have lost the memories he once had.
What's more, the entire GRC has forgotten why he was contained in the first place.
But there is always a prompt in his mind, quietly hinting at something.
"You are the heir to the Forbidden Lineage. Find it!"