Shiki Ryougi is the main protagonist of Kara no Kyoukai. She is a girl who possesses the Mystic Eyes of Death Perception, a supernatural ability that allows the user to see the inherent mortality of everything (both living and non-living) in the form of lines. She assists the Garan no Dou agency in handling paranormal cases when combat is required.

Shiki’s family, the Ryougi, were members of the Demon Hunter Organization. Their special skill involves creating two separate and distinct personalities within themselves. When a child is born, he or she is given a single name written in two different kanji, each one relating to each personality.