Crimson Stone
来自 Onimusha Wiki
The Crimson Stone is a key item that appears in Onimusha 3: Demon Siege. This Genma ironstone can be forged with just heat.
Usage
The Crimson Stone can be given to the blacksmith's apprentice at the Blacksmith in Sakai in order to be forged into the Crimson Gear once Heihachi brings him enough water.
Acquisition
The Crimson Stone is dropped by a Dark Spider upon death in the western chamber of the Undersea Temple. This item can only be obtained during the Adventures of Heihachi minigame.