So I noticed there isn't really a limit to how many forms.

DISCLAIMER

Some of them i got from internet most me and my friend made up

Breath of Space

Form 1--- Shooting Star fall-
I flyat them with a vurst of speed and do 1 strong strike.

Form 2--- Heliacal Rising
Anticipates or predicts the opponent's next motion and stikes with their blade as, or  right before, it begins. This technique can either be used to interrupt the opponent's motion or to attack them before they can complete it.

Form 3--- Spacial sense-
I can sense where demons and people are in any space surrounding me, but i am vulnerable the farther my sense goes out.

Form 4--- Silver River-
Allows me to see opponents as "constelations" actual senses update their information on the opponents in bettween their attack.

Form 5--- Broom-Tail Comet
Unleashes a long, straight forward slash that appears to leave blurred afterimages. In addition to doing devastating damage anyone caught by the brunt of the technique. Those who stumble into it's afterimages are dealt damage as well though of a seemingly lesser degree.

Form 6--- Shooting Star-
I gain a burst of speed to get some where quickly.

Form 7--- Night's Desguise
Blend in with the night sky to hide from demons and humans.

Form 8--- Darkness Strike
Strong strike from shadows.

Form 9--- Revolution of the Celestial Spheres-
A senses of circular slashes of varying length are released around the user. Each is ringed with "chaotic blades" in order to increase the amount of damage and make it harder to predict

Form 10--- Norther Lights Veil Cascade-
I make a slash to the sife that both deffect blows and damages the attacker. It can also be used more directly, as a lengthy side-ways slash or in a more circular motion.

Form 11--- Guest Star-
I dash towards the opponent, seemingly preparing a massive attack before suddenly disapearing and reappearing to strike them from another angle. It may be used without either the first or second attack, allowing the user a form of practical teleportation

Form 12--- Drop of Stone Rain-
I strike the target in a thrust or downwards strike; when the attack strikes, the damage spreads out in a wide formation around the surrounding area in the form of cracks or a crater.

Form 13--- Big Dipper-
I release seven simultaneous slashes, generally striking the target in the shape of a Big Dipper. The distance between each slash can be freely manipulated by the user, and it can work effectively at various ranges and on varied terraims.

Form 14--- Black Hole Sunyata
I grip and swing my blade in such a way that when it either strikes the opponent or something connected to them, the force of the impact and accompanying either hemispiritu neglect or outright sensory deprivation. A flurry of this strike can be launched all at once which if successfull, will plunge the target into a seeming void. Thid technique works just as well against humans as demons and skilled-enough can duplicate it effects -if at a smaller scale- with their own boddies, causing a flick to be enough to temporarily disorient the target.

Form 15--- Your Last Sight-
I slice so fast, that all matter near the point of impact implodes and disapears.

Form 16--- Little Pocket of Sunshine-
I strike where I want if they loose a limb if not in the neck that limb burns as if touched by the sun and slows regen of that limb.

Form 17--- Planetary Obliteration-
I give a quick strong stike that then splits into many strikes through the body.

Form 18--- Star's Death Final Stance-
With this form, you take in immense energy that causes you to become faster and stronger but eventually if do not hit the energy will over load and you exploded into a supernova in a 40ft radius.(kinda kills u also its a last solution if all else fails)