Kaze no Kizu (風の傷) is a special technique featured on the manga and anime series Inuyasha. The technique comes from Inuyasha's sword, Tetsusaiga. It is also known in the English dub as the Wind Scar.
The attack is accomplished by finding the rift, or scar, between the powerful demon auras of Testusaiga's wielder and the demon being attacked. Once the Wind Scar is found, the wielder of Tetsusaiga then swings the sword to release a powerful energy wave that obliterates all in its wake.
Built upon this attack is a more powerful attack called Bakuryuuha.