Oikage

Oikage (追影, Seeking Shadow) is the Final Secret Sword Technique of Ikki Kurogane.

Description
Oikage is a technique Ikki had developed after his seven secret sword techniques in the final of the Seven Stars Sword Art Festival to defeat Stella, thus making it his final secret sword technique. Oikage is a battoujutsu, which doesn't a sheath as his Intetsu doesn't have one, instead, Ikki uses his hand in a manner that similar to a sheath and does so after first using his Ittou Rasetsu, afterward unleashes a slash that moves at extreme speeds to the point where his shadow was unable to keep up and is described as being the concept of a slash.

Unlike his other secret sword techniques, which Ikki was able to use after learning Edelweiss' Swordplay since at first, he needed to use his Ittou Shura. He still requires  Ittou Rasetsu to be able to use Oikage.

Users

 * Ikki Kurogane

Trivia

 * Oikage is stated to be the peak that other people have attempted to reach.