The Beast Nefilims (Nephilims) are Supernatural Meta Humans who are spiritually connected to the Sacred Beasts. They have enhanced strength, agility, speed, durability, reflexes, and boost senses. As well as slower aging, they can understand and speak various languages and manipulate any element using their chi, depending on the Beasts they're born with. Many millennia ago, very few humans from around the world were chosen by the Heavenly Beast to become their successor and hold off on the malevolent beings running amok throughout history. They were formed into secret clans throughout many regions, each sharing the same objective.

Eventually, the Nefilims had achieved their longtime goal and most of the Malevolent beings had been sealed away and never encountered the physical world for more than 2,000 years. During their missions, The Nefilims were set out with one rule, never engage in human conflicts by any means necessary. This includes wars that only humans have to resolve themselves. However, during and after the events of World War II, fewer countries (Most notably North America) saw the Nefilims as a threat to the human race. So, the Secret Clans were either focused on disbanding or being incarcerated for eternity. As time passes, the Nefilims live among the human population. Some are trained, while others have little to no knowledge of what they are. But now, a new generation will have to break out of hiding to stop history from repeating itself with the latest threat on arrival.