In­uYasha becomes detached from the Tetsusaiga once again and initiates into his demonic transformation. He urges not only to battle against Ryukotsusei, but also against his y?kai state, regaining his ability to wield the Tetsu­saiga. After InuYasha attempts to attack Ryukotsusei with the Wind Scar, but to no avail. He is then able to master the Backlash Wave, an attack unleashed to engulf the attack of the enemy in a whirlpool and reflect it back with the added power and energy of the Wind Scar, in order to defeat Ryukotsusei.