<h2>I can't find any example of Non-Native Rokugani (besides Naga and Oni) that have the Void Use Feat.</h2>

I have looked through at least 10 different Legend of the Five Rings books - All of "The Way..." books and the Campaign Setting book. No Example in Dragon or Dungeon Magazine either.

The only reason I could think of... it is a Setting Specific feat. Could it be adapted outside of Rokugan? Absolutely.

<hr>
**The Void exists in Greyhawk.**

**_Complete Divine_**

 - The Shugenja core class, pg. 10. While it doesn't have a specific
   mention of a feat called Void Use, it does describe the 5th Element
   of the Void:
   
   >**Adventures:** Shugenjas often adventure to increase their magical knowledge and personal power. They are particularly drawn to
   investigate disturbances in the natural harmony of the four classical
   elements (earth, air, fire, and water). Some shugenjas dedicate their
   lives to keeping the world’s magic in balance, while others simply
   crave the power that the unchecked elements offer. **Still others are
   drawn to plumb the depths of magic for magic’s own sake, hoping
   eventually to learn the mysteries of void, the “fifth element” that
   binds the others together.** [emphasis: **bold**]
 - The Order of Ineffible Mysteries is briefly described on pg. 13:
   
   >The shugenjas of the Order of the Ineffable Mystery can specialize in any of the four elements. **The Ineffable Mystery also trains
   shugenjas who specialize the fifth element, void.** [emphasis:
   **bold**]
 - The Void Disciple prestige class, pg. 72. While it isn't specifically
   a feat called Void Use, nearly every power is Void (Insert Text).

**Complete Arcane**

 - Voidsense. Invocation for warlocks on pg. 136. Warlocks are often
   described as channeling the power of fiends. The Oni within Oriental
   Adventures are fiends and have lots of lore surrounding The Void.

<hr>
**Rokugan is Designed to be Refluffed**

For example, it is noted that while barbarians are appropriate for the Unicorn clan, the barbarian class can be used to represent "beserkers" who are not true barbarians in some *Rokugan* families. Rangers are also noted as being appropriate to *Rokugan*, but their spell-casting ability is somewhat out of place. Rangers other than the fox clan and the naga are allowed to take fighter feats instead of access to a new level of spells.

The Inkyo, or enlightened monk, represents a slightly different, less martial monk than the one presented in the PHB. The Inkyo does receive unarmed combat abilities similar to a monk. Their damage progression is slower than the core monk and they do not have the faster attack progression and flurry of blows ability, nor stunning fist or most other standard monk abilities. They do, however, learn how to use "void" points to enhance their rolls or AC, gain a great resistance to elemental magic, and receive a number of free "kiho" feats, which represent esoteric martial arts techniques.

Does that mean PHB Monks should simply be removed from Rokugan? I don't think so. There should be the mix of *Enlightened* and *Non-Enlightened*.

<hr>
**What is Rokugan?**

Rokugan is just a city-state within an unnamed land mass; savvy DM's could very well adapt that unnamed land mass to certainly be within *Kara Tur* of the *Forgotten Realms*.

>[Gaijin][1] was the *Rokugani* word for an outsider or foreigner. This essentially meant anyone who was not *Rokugani*. 

<hr>
**Ten distinct nations and regions in *Kara Tur*<sup>1</sup>:**

 - Shou Lung: Imperial China
 - T'u Lung: Historical dissident states based in South China during
   eras of political disunity (i.e. Nanzhao and Kingdom of Dali,
   formerly centred in present-day Yunnan province)
 - Wa: Feudal Japan (Edo Period)
 - Kozakura: Japan[5]/Ryukyu Islands (Ashikaga period)
 - Northern Wastes: Historical non-Sinic tribal societies of Manchuria
   or Northeast China
 - Tabot: Tibet
 - Koryo: Korea
 - The Island Kingdoms: Pre-colonial Hindu-influenced civilizations of
   Indonesia and the Philippines.
 - The Plain of Horses: Historical Mongolia. This region is the Kara-Tur
   portion of the Hordelands, also known as the Endless Wastes.
 - The Jungle Lands of Malatra: Pre-colonial civilizations of Indochina
   (historical versions of the Khmer Empire and Vietnam) as well as the
   hill tribes inspired by their real-life Southeast Asian counterparts.

It wouldn't be a stretch to modify the list of nations above to say, replace *Kozakura* with *Rokugan*. The *Hordeland*s received some special attention in Dragon #349 with d20 in mind. They are not *Rokugani*. However, they are within the realm of *Oriental Adventures*; would be *Gaijin*; and would/should qualify for *Void Use* feats.
<hr>
**Black Heart of the Empire**<sup>2</sup>

>The Black Heart of the Empire was another name for the Shadowlands, and in opinion of Ide Tadaji should be considered as a part of the Empire. 

"Should be considered as a part of..." is a strong implication that the Shadowlands are actually not a part of the Empire - therefore would not be Rokugani. Inhabitants of the Shadowlands are known throughout the source material to have Taint and practice Void Use as well as anyone else.

But the most legendary Courtier seems to think that the Shadowlands should be a part of Rokugan...

**Nezumi are native to the Shadowlands:**

>The nezumi, or "ratlings" as they are often called by humans, are a race of bipedal ratlike humanoids. In Rokugan, they are an ancient race native to the Shadowlands.

>Immune to the Shadowlands Taint: Nezumi can never acquire a Taint score, and suffer no ill effects from exposure to the Shadowlands. 

<hr>

**If I Were DM...**

Personally, I would allow it, but treat it as other *Regional* feats; if a player not from that region wanted such feats, then appropriate ranks in *Knowledge (Local-Rokugan)* 5 ranks or so should be a sufficient "requirement."

I personally believe that Nezumi are just as familiar with Void Use as anyone else would be in Rokugan. Therefore, I would allow a Nezumi Inkyo to take full advantage of:

>Void Use: Inkyo gain this feat for free at first level.

<hr>
**Footnotes**

<sup>1</sup><sub>https://en.wikipedia.org/wiki/Kara-Tur#Nations</sub><br>
<sup>2</sup><sub>http://l5r.wikia.com/wiki/Shadowlands#Black_Heart_of_the_Empire</sub>

  [1]: http://l5r.wikia.com/wiki/Gaijin