Sōryūha

"Remember this well, Towa. Your attack, the Azure Dragon Wave, was created by Sesshōmaru. But you have made it your own by giving the dragon twin heads. From this day forward, you shall call it the "Twin Azure Dragon Wave"."

- Kirinmaru to Towa

is the signature move of Sesshōmaru's Tōkijin. A powerful burst of yōki is released and takes the form of a dragon. It draws its energy directly from Sesshōmaru, and varies in strength. It is even capable of overcoming the Tessaiga's Backlash Wave. Sōryūha is Sesshōmaru's ultimate attack.

Towa was able to use this move by enhancing her own demonic energy from the silver Rainbow Pearl to form an energy blade on a Replica of Kikujūmonji after it had broken. By harnessing her full demonic powers to their highest, she also able to unleash two dragon waves at once after witnessing the death of Setsuna at the hands of the Beast King of the Eastern Lands, Kirinmaru. He called it.

Towa was able to use this move by enhancing her own demonic energy to form an energy blade on a Replica of Kikujūmonji after it had broken, without the silver Rainbow Pearl, and since it and the others have become Zero's tears that Setsuna have severed the between her and the spirit of their grandfather Tōga. An additional strengthened version appears when combined with the infinite amounts of supreme demonic energies of the mystical Kyūyōkon Root and that of the Grim Comet itself. Towa called this upgraded attack of hers as it contains the infinite powers of the very stars.

Trivia

 * It is not shown in the manga.
 * It is also used in the two games: The Secret of the Cursed Mask and Feudal Combat.
 * In the third movie, Swords of an Honorable Ruler, Sesshōmaru is shown using Sōryūha with Tenseiga, although the movies are non-serial.
 * In Kagura's Wind, Sesshōmaru calls this technique "Azure Dragon Wave".
 * In "The Dream Gazing Trap", Riku stated that Towa must use the demon energy blade by the Azure Dragon Wave to defeat Kyūki, something he then had referred to as being "half-assed" in comparison of the one used by its originator.
 * The Sōryūha is a reference to the holy  of Chinese legend who opposed the four evil '', themselves represented by the.