Board Thread:Theories and Speculation/@comment-45444155-20200506094659/@comment-25122992-20200507160822

Basically yes, there's no "wind spiritual/natural energy" whatsoever, there's only chakra in a person's body. If a person has an affinity towards an element, it's easier for them to transform their chakra into this element. Not that they cannot transform chakra into other elements out of 5, but it's harder and requires more time to master than the main affinity.