Iunnians live, for the most part, in harmony with the land and life of their world, and with each other. The slow development of their technologically primitive civilization has eased the damages of rising populations, though they are not without their own crises.

While science and forethought are not lost on the most curious Iunnians, most would prefer to live their lives knowing only what they need in order to enjoy life and leave a legacy for their children. Like salmon, Iunnians never know their parents. Reproducing pairs must go through a lithification process, leaving their joined bodies seeded with stone-wrapped eggs. Siblings share a clan-like bond and usually work together throughout their lives.

Because of their reproduction cycle, Iunnian courtship develops over a lifetime, and only the eldest pairs make the commitment of self-sacrifice. Iunnian men and women seldom associate with each other, but occasionally share a strong platonic relationship. Men are three times more common than women, and, because of this, women are more highly esteemed in leadership and societal wellbeing.

Iunnian men and women share an inverse system of breath by which a man and woman can breath into each other's lungs in high altitudes to withstand otherwise lethal conditions. Iunnians also do this to show affection or social recognition, similar to how apes groom one another. Iunnian breath is immunologically regenerative to the opposite sex. Iunnian men and women can live without each other, but not without risking illness.