Kaze no Kizu

also known as the Wind Scar in the English dub, is a special attack technique featured in the manga and anime series InuYasha. The technique was the base attack of the phantom sword Tessaiga, currently wielded by Inuyasha.

This attack was accomplished by finding the rift, or scar, between the powerful yōkai auras of Tessaiga's wielder and the opposing demon. Once the Wind Scar was found, the wielder of Tessaiga can swing the sword into the rift to release a powerful energy wave that has the power to kill 100 yōkai with one strike.

Inuyasha used the Kaze no Kizu for the first time unintentionally when he was trying to save Miroku so he wouldn't use his Wind Tunnel. When the wielder becomes proficient enough, the Kaze no Kizu surrounds Tessaiga and can be used at will.

Built upon this attack is the more powerful attack called Bakuryūha. Inuyasha first used Bakuryūha while he was fighting Ryūkotsusei, the demon that Inuyasha's father sealed away. Inuyasha accidentally used Bakuryūha when he tried to use Kaze no Kizu. Defeating Ryūkotsusei resulted in Inuyasha's mastering of the Kaze no Kizu and Bakuryūha, thus making Kaze no Kizu usable even without considering the yōkai aura.

The Kaze no Kizu can only be performed if one uses the Tessaiga. The only exceptions are in stealing Tessaiga's power and absorbing it into one's own sword, as with Kanna's Mirror Demon, as well as the demon sword Dakki, which was wielded by a swordsmith named Toshu.

风之伤 Kaze no Kizu