Miroku's wind tunnel is not a power its a curse.
So many years ago Miroku's grandfather tried to fight Naraku, but Naraku cursed Miroku's grandfather.
And the curse was, and will be, passed down from geratshion to geratshion. The hole in
Miroku's hand gets bigger every year slowly devouring Miroku's body.
He asks every YOUNG woman to "bare his children" in case he died before he could avenge his grandfather. The only way to stop the hole from growing or going any farther down the famly tree is to kill Naraku.(big surprise)
Submitted by serenz