Yes the deku tree said that.
Anyways, I just met the Wind sage in WW and its a kikori, and the whole desndent and instrament deal leads to that one korok (forgot his name)
so that their proves koroks are decedents of Kikori
Yea im preaty shur the Deku tree in WW is the Deku sprout in OoT.
He says they are his children and once took the forms of Humans (kokiri)
They are magical beings and it would make alot more sence to me if they were orginaly Korok's as they are the deku's children, turn into to kokiri for...