File:Souryuuha.png

Summary
The ougi (ultimate technique) of the Toukijin (screenshot from the 4th Movie)

Licensing
This technique is unique to Sesshomaru when he uses the Tōkijin or Tenseiga since he executed it three times in the third movie, and twice in the fourth movie. In the third movie when Sōryūha is unleashed, thick arcs of blue lightning stab the earth and carry their destructive force to Sesshomaru's opponent. In the fourth movie it is worth noting that the energy released by Sōryūha resolves into the shape of a dragon right before destroying the enemy (in keeping with the attack's name). This attack never appeared in the manga. Since the attack was performed by both Tōkijin and Tenseiga in the third movie, there is some speculation as to whether the attack is just an output of Sesshomaru's demonic energy. Interestingly enough, like the Tessaiga-- Tōkijin seems to possess the ability to adjust to particular attacks and energies: when Sesshomaru first utilized Sōryūha, Tōkijin's blade would often short-circuit due to it being "only an oni's fang" and thus unaccustomed to the massive amount of yōki channeled through its blade. However, by the time of the fourth movie; the sword seemed capable of being a conduit for the attack with no ensuing refractory period.