A long time ago in Japan, when large structures such as bridges or castles were built, young maidens were buried alive under the foundations or in the walls as offerings to the gods.
These human sacrifices were believed to make the buildings stronger and protect them from destruction, as the maidens would forever watch over them. They were called "Pillars," and would support the spells and wards that kept evil forces out of our world.
FF5M:Pillars
Memo: Pillars
Obtained: Beginning of Sixth Drop
Type: Terminology
人柱（ひとばしら）
橋や城などの重要な建造建物を建てる際に、
その建物をより強固にし、破壊されないこと
を神に祈願するとして、壁や地面の中に
人を埋める風習。
多くの場合は、その人々が生き続けて建物
を支えるという考えのため、生き埋めとされた。
神への祈祷などで供される人身御供に
ついても、犠牲となり人の世や、ある種の
封印自体を守るものとして「柱」という
言葉が使われることもある。