Raikiri

Raikiri (lit. Lightning Cutter) is the Noble Art of Tohka Todo.

Description
An ultra-electromagnetic Battoujutsu where Tohka charges her blade with her lightning and drawing it out at an immense speed which easily transcends the speed of sound, releasing blinding light and huge amount of heat in the process. The Raikiri grants Tohka a near invincible advantage in close range battle. In fact, the Raikiri easily destroyed Shizuku Kurogane's Hisuijin, along with her Byakuya Kekkai's mist to the point where her lightning affected the assembly hall used for her match.

Weakness
Due to the Raikiri being a sword drawing technique, it can't be cast continuously without having the blade return to the scabbard. Furthermore, well Raikiri is powerful, it can still be withstood or even overpowered. Something both the Kurogane brothers proved.