Atavism of the Seikōzoku

The Atavism of the Seikōzoku (魔族大隔世, Seikou Zoku Dai Kakusei, translated as "Sacred Race Great Atavism") is when atavism occurs as a result of a Seikōzoku deliberately rendering its genes a recessive trait until that code can express itself in a descendant strong enough to succeed it and create a sacred sleeper agent. This, understandably, is an extreme example. Seikōzoku (神聖なレース, Sacred Race) are humans with a natural affinity for Yin and Yang Chakra Manipulation and are born with large amounts of chakra, even as children. This power seems to exert itself in the form of Rinnegan; as well as Seikouki in rare cases.

Seikōzoku are typically lonely people, viewed by those around them as beings with strange and mysterious powers, leading to prejudice and being hated and feared. They also seem to be strong proponents of change, even taking it into their own hands to change the world and bring it to peace; saying it is their duty as the "sacred race." In spite of their lonely lives, they appear to be people who are quite joyful and caring to those loyal to them. A Seikōzoku's power stems mainly from their desire to change the world around them and to protect all that is right. Rikudou states that a Seikōzoku's power manifests four times in one's lifespan; once the final fifth one is manifested, one has become a "complete" Seikōzoku. The four main manifestations include the control of yin/yang chakra; Rinnegan; Seikouki; and Ten'i Seikouki. The fifth "other worldly" manifestation has yet to be explained or witnessed.