Sōryūha

is the signature move of Sesshōmaru's Tōkijin and Tenseiga. 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 Bakuryūha.

Towa Higurashi 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.

Trivia

 * Sōryūha is not shown in the manga.
 * It is also used in the two PlayStation 2 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.
 * In Episode 2 of InuYasha The Final Act, Sesshōmaru calls this technique "Azure Dragon Wave."