Which chakra nature does Shikamaru have?

[Naruto.]

So, I started re-reading some classic, good 'ol chapters of Naruto and I came across this scan:

Spoiler

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This scan is pretty interesting. I'm sad, Kishi didn't expand on it more. We would've atleast known which element he had.
What do you people think? I personally think it's lightning or wind.
Lightning especially, as clouds were shown in the next panel.

 

[chintu234]

i guess wind.

 

[Beauty Busty Beast]

By feat we have seen Doton.

 

[take it easy]

shika has doton

 

[Naruto.]

I figured it out! So it was not any elemental chakra, but shadow chakra!
This scan proves it:

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That's why Kishi showed Shika channeling chakra in the earlier scan I posted.

 

[YellowFang]

He has Shadow Release...

 

[Chatte]

Shikamaru has some Yin and Yang manipulation. It's somewhat "explained" when Kakashi starts training Naruto for his chakra nature. When Naruto asks about Shikamaru's Kage Mane and Choji's Baika no Jutsu, Yamato says that maybe they should explain him the Yin and Yang manipulation another time, from what I recall.

 

[Gatsuuga]

Thank you naruto wiki.....you saved me from tryin to find yamatos explanation and the Tayuya fight.

Aside from the five basic types of nature transformation, there is also a sixth type: the Yin (陰, In), the basis of imagination and spiritual energy, used to perform Yin Release (陰遁, Inton); and the Yang (陽, Yō), the basis of vitality and physical energy, used to perform Yang Release (陽遁, Yōton). Together, they are used to perform Yin–Yang Release (陰陽遁, Onmyōton).[7] Yamato implied that the Yin and Yang are the source of non-elemental techniques such as the Shadow Imitation Technique, Multi-Size Technique, medical ninjutsu, genjutsu, etc.[8]

The transformation of the Yin and Yang seemingly has to do with altering the amounts of and balance between spiritual and physical energy in chakra. As explained by Shikamaru Nara, Tayuya's spirit worms were forms of spiritual energy that have small amounts of physical energy, thus they require stability and feed upon the physical energy they lack. Shikamaru also mentioned that Tayuya was the same type of ninja as he is, being able to use such kinds of "special chakra" in battle, supporting the belief that the Nara clan's shadow-based techniques are also Yin and Yang-based.

 

[Jordanofthecloud]

Water
.......

 

[Zorø]

Wind style affinity.

 

[Naruto99Uzumaki]

doton and maybe wind

 

[Ovan]

Don"t really matter..

 

[juzumaki]

yin realease

 

[Naruto.]

I've answered my own question, so thread closed.