The Seventh Son of a Seventh Son, or the Seventh Daughter of a Seventh Daughter, is a particularly gifted human. Specifically, this refers to someone who has six older siblings of the same sex and no older siblings of the opposite sex, and who’s same-sex parent similarly had six older siblings of the same sex and no older siblings of the opposite sex. This has become increasingly rare in the modern day but does still occur. The effects of this condition vary, but generally they are more prone to mystical abilities. One possibility is that a Seventh of Seventh will have the second sight, able to perceive the inner nature, or souls of things. This makes them invaluable to Hunters of all kinds.