Bakuryūha



-Backlash Wave in english dub is the ougi or ultimate attack of the Tessaiga. The technique can only be used by someone who has mastered the Kaze no Kizu, the base technique of the Tessaiga. When an opponent with strong yoki (demonic energy) unleashes an attack, the Tessaiga can use the Wind Scar to engulf the enemy's attack in a twister and reverse it back on them with the added power of the Wind Scar.

InuYasha learned and mastered the technique when he battled Ryukotsusei. He used the Bakuryuha without knowledge of the technique, something Totosai the creator of the Tessaiga said was impossible. The user's yoki must be greater than the enemies' own yoki or else the technique cannot be used, as both explained by Totosai after Inuyasha discovered it and as seen against the battle with Sō’unga, in which the Gokuryuuha's yoki was stronger than Inuyasha's and the Bakuryuha didn't form.