The Secrets of the Past and the Big Fish Beneath the Water!
Before the great war to eradicate demons, martial artists who possessed Demonic Martial Souls were practically the supreme rulers of the Spirit Realm, even standing above the Giant God Race. For example... the Heaven Swallowing Race had once been a divine race on par with the Giant God Race.
When the great war to eradicate demons erupted, martial artists from across the world gathered together and created a divine ability and secret art capable of killing those who possessed Demonic Martial Souls. This was... the Dragon Slaying Skill.
After the great war to eradicate demons, nearly all the martial artists who possessed Demonic Martial Souls were slaughtered. The rest either concealed their names and vanished from the world, or stopped involving themselves in the trivial affairs of the Devil Realm and the Spirit Realm.
Yet after countless years, Demonic Martial Souls still appeared silently in the world.
At the height of the Nine Underworlds Demon Palace, it accepted disciples without distinction. As long as a martial artist was willing to join the Nine Underworlds Demon Palace, the palace was willing to take them in.
For a time, martial artists with Demonic Martial Souls from across the world, martial artists of the Demon Race, ascetic cultivators, and all manner of other practitioners flocked to the Nine Underworlds Demon Palace. This was what allowed its power to reach an unprecedented height in the Devil Realm within a mere ten thousand years.
According to the historical records of the battle that destroyed the Nine Underworlds Demon Palace one hundred thousand years ago, there had been more than a hundred undying beings within it, including more than ten members of the Heaven Swallowing Race. If the Devil Realm Eastern Region had not