The 'Black Moon Cult' is the headquarters of the Unorthodox Faction that rules half of the martial world. Among its many structures, the residence where the cult leader Sahyuk stays is called the 'Hall of Ten Thousand Demons.'

Inside the Hall of Ten Thousand Demons, the air is thick with incense smoke and filled with the finest silks and jewels according to Sahyuk's tastes, creating a strangely luxurious and languid atmosphere. However, just outside those doors lies a hellish place where secret feuds and slaughters occur daily.