Oni Dust
来自 Onimusha Wiki
The Oni Dust is a key item that appears in Onimusha 3: Demon Siege. When thrown into fire, it is capable of transporting you elsewhere.
Usage
The Oni Dust can be used to open a portal to the Undersea Temple by throwing it into the fireplace at the Blacksmith of Sakai.
Entering this portal will begin a five minute time limit. If the player fails to obtain the Crimson Stone and return to the exit portal before time runs out, they will trigger a Game Over.
Acquisition
The Oni Dust is given to Heihachi by the blacksmith's apprentice at the Blacksmith of Sakai. This item can only be obtained during the Adventures of Heihachi minigame.