User blog:WanderingAsura/Intetsu

Intetsu: Ikki's Device takes form as a raven black katana that has a rectangular tsuba. It is called forth at times whenever using the command: Come Forth, Intetsu.
 * Ittou Shura: Ikki's initial Noble Art. Through amassing all of his bodies' vigor and stamina as well as ignoring his natural survival instincts, he can bring out his full power, then he further magnifies it using his Doubling Physical Powers thus granting him tremendous power for one minute. Having trained with Edelweiss to improve his magic control, he was able to improve his Ittou Shura, but hasn't yet shown to what degree.
 * Ittou Rasetsu: His second Noble Art and an improved version of Ittou Shura, where Ikki shuts down all his five senses and his bodily functions, mustering all his strength for one second instead of one minute boosting his power a hundred-fold, but this can be used for one swing. Ittou Rasetsu puts a heavier burden on him than Ittou Shura forcing him to remain in bed for a week after using it for the first time. Having improved his magic control, Ikki could concentrate the power granted to the parts needed, the excess power was focused on Intetsu removing the severe side effects.
 * Ikkaku: This is a Noble Art, which belonged to Ryouma Kurogane, which Shizuku and Ikki could use when merged together, where the latter freezes the target the moment the tip of the sword touches the target, then the piercing strike would break the frozen target.
 * Kachiwari: This is a Noble Art that has the same principle as "Ikkaku", but it instead freezes and slashes its target.
 * Seven Secret Swords: Ikki's seven original sword techniques.
 * Ten'i Muhou: Ikki learned the ultimate move of the Ayatsuji Ittou-ryuu, in which the user counters the opponent's attack with minimal movements. Ikki used an imperfect version of this move on Kuraudo.
 * Tsunoou: A unison technique between him and Stella, where Ikki runs, then jumps onto Lævateinn; at the same time she swings, he propels forward using Saigeki, focusing their combined strength, yielding greater offensive power than normal. Despite being a perfect union attack, their names are different as Stella named it Harmonic Bullet.
 * Amatsu Raikou: This is an evolved version of the Amatsukaze which combines Raikou, where Ikki launches a continuous barrage of 108 slashes, after reaching the 90th to 108th slashes, it is delivered in one beat akin to lightning roaring in the skies that Iris couldn't counter.