Raijinjuu

Raijinjuu (Lit. Lightning God Beast) is the famed technqiue of Tohka Toudou, in which she earned her namesake Raikiri.

Description
Described as an ultra-electromagnetic battōjutsu/iaidō, in which Tohka charges her sheathed Raiden with lightning, then after she creates a magnetic field around both the blade and sheath; she is able to unleash a slash, which moves at an immense speed surpassing the speed of sound as well as releasing both blinding light and a huge amount of heat in the process. Raijinjuu grants Tohka a near-invincible advantage in close range battle. It is also possible for her to be able to cut through a bolt of lightning.

In fact, the Raijinjuu easily destroyed both Barnstokkr and Byakuya Kekkai of Sieglinde, as well as her lighting, being able to affect the assembly hall used for her match.

Weakness
Due to the Raijinjuu being a sword drawing technique, it can't be cast continuously without having the blade return to the scabbard. Furthermore, while the Raijinjuu is powerful, it can still be withstood or even overpowered as seen with both Tokugawa brothers. Raijinjuu excels at close combat, but once the opponent can strike outside of Raijinjuu's distance, there is little to no chance of winning using Raijinjuu.

Trivia

 * The name, Raijinjuu, is a reference to two different lightning-related beings from Japanese mythology: Raijin, the Shinto god of lightning, thunder and storms, and the Raijuu.