User blog comment:DinoTaur/Welcome to Prof. Dino's Aurology Class!/@comment-25814498-20160218235631/@comment-25814498-20160312010235

Yes, but we differ on what aura fundamentally is. Looking at all the Theories, it is either:

A) Energy which can take on the properties on mass

B) High Energy particles which are plasma at room temperature

Z) Aura particles suspended in the air at all times which Nen users can manipulate.

That last ones sort of a wild card, but it's still plausible.