Sekiro: Shadows Die Twice Wiki

In-Game Description

A book of secrets that details a variety of techniques for use with Shinobi Prosthetics. Grants the ability to learn "Prosthetic Style" skils.

Written by a man who abandoned the path of the Shinobi, but could not bring himself to discard his painstaking research.
He never expected to pass these on to anyone else.

Prosthetic Esoteric Text.png



Unlocks the Prosthetic Arts Combat Art tree.

The earliest this item can be unlocked is after retrieving the Shuriken Wheel, Robert's Firecrackers from Ashina Outskirts and either the Flame Barrel from Hirata Estate or Gyoubu's Broken Horn from Ashina Castle.