Essential to even the most basic shaman magic, Furyoku (巫力, furyoku, "shamanic power"), called Mana in the English Manga, is the measure of the sixth sense that an organism is born with. Generally a product of willpower, Furyoku can be generated either naturally or artificially (e.g. Golem). Furyoku's consistency is contingent upon the being's conviction. Every living thing (plants, animals, and human beings) is given a measure of Furyoku by the Great Spirit prior to birth to live out their lives, and upon their death, that power returns to the planet. During an organism's lifetime, their cumulative experiences form memories, which upon death return to the planet along with their Furyoku. These memories in turn give rise to more Furyoku, allowing the planet's spirit as a whole to grow, and