Saint's Corpse

The Saint's Corpse (聖人の遺体), also called the Holy Corpse Parts (聖なる遺体) is central to the plot of the story.

Apparently ancient human remains; the Corpse Parts are first described as belonging to a, miraculously self-preserving, and disposed to imparting miraculous powers (in the style of certain religious ). Although never confirmed as such, they're heavily implied to belong to.

Heart
Over the individual chest appears the word "conscience" in a pattern resembling that of the location of the other Parts in the country.

Eyes
The "guardian" of the Eyes appears like a robotic Stand; invisible except where covered by sand, holding one in each hand. Each has the word "turbo" written around the iris, and allow their holder to see Parts in the possession of others.