Wind

[Kai]

Except if someone blows the shit autta ya! with wind jutsu, well kunai isnt turning at you but still... throwing mass of em and getting them in yo face back...its still metal it hurts.

If you're skilled enough you'll be able to dodge them. Fast reflexes.

[Dragon6624]

Why is Kai not voted as most helpful poster this month?

And also Kono...always wondered...who are you mourning in that pic?

As for the actual topic, I think the interaction between jutsu and weapons will more than likely be a late-game thing...so..might want to stop worrying about it (for now anyway).

[Kayleb]

I think this'd be a great idea. I think in certain environments the wind should change. For example, in the land of snow where wind is an element, there should be high winds in blizzards that divert the path of your kunai

[Konohuro]

And also Kono...always wondered...who are you mourning in that pic?

Personal.

[Mars]

And this would be another advantage of magnet release.
The ability to manuevere your kunai, shurikan or other metal ninja tools through strong winds.

The Hidden Metal village is underrated.

[Vreg]

Yes, the mechanics of SLO's shuriken jutsu will allow stuff like kunai to be affected by wind, magnetic forces, etc.