I don't think so. :/ If you're talking about a force that transforms their body into a weapon then we already have Carbon Death.
btw new style! Just finished it.
Bloody Razor 
A style based around the mysterious art of manipulating the body's own blood. Ki is able to flow most easily and freely through the blood as it circulates through the body along with it. Ancient martial artists used these techniques for unconventional attacks and tools during life, being favored particularly among assassins as it let them murder without bringing in a weapon as well as escape their bonds during torture or interrogation. Only the user's blood can be manipulated, as it is the only one filled with their unique Ki, but also because it is so purely filled with their essence it cannot be controlled by anyone else. Of course because it is their own blood the practitioners of this style could never use their powers recklessly. The average human body contains about 12 pints of blood. If you were to lose any more than 4 pints, 1/3 of the body's blood, you would pass out and die soon after without immediate treatment. In addition, every pint of blood lost weakens the body and so the user of this style will become 1 rank weaker for every 1 pint lost.
Stage 1 The first stage is done in most part within the library. Students will study the anatomy and blood circulation of the body so that they can plan out exactly which bodily cuts will be safe to them and which could be quite deadly. The objective is to draw out just enough blood for the techniques without spilling any, as every drop is important, or putting yourself in potential danger.
Lifeforce RepressionRank: E
Description: Basic control move where the user sucks blood back into their wound and holds it there. This in effect keeps the user from bleeding out or dying of blood loss for some time. This costs E-rank ki per post.
Crimson CutterRank: E
Description: A technique used only to escape bonds, the user draws out a small stream of blood and shoots it around their body to cut off rope or string bonds. Metals are too tough to cut.
Seeing RedRank: E
Description: A dirty fight technique where the user coats their fingers in blood and then flicks the blood into the eyes of their opponent in close range. Energy is put into the blood to make it stick to the opponent so its difficult to rub off immediately.
Blood BulletRank: D
Description: After making a small incision in the hand, or by drawing the blood to the hand from another wound, the user condenses the blood, fills it with energy, and fires it in a straight line. Like being fired from a gun this attack has a lot of speed, and creates an amount of blunt force to knock the breath out of an opponent or otherwise knock them unconscious if hit in the right spot. Costs 1/4 of a pint.
Stage 2 Now the user learns how to branch out their abilities to create new and creative weapons for fighting. Of course, the downside is that most of these techniques have a cost of blood to a certain degree. Training is done by memorizing any information missed in the first stage and then through practice with blood manipulation.
Barbed Blood TrapRank: D
Description: The user creates a fist-sized ball of blood, with small spikes sticking out around it. When thrown this ball can quickly expand and injure or otherwise pin an opponent. Costs 1/4 pint of blood.
Hair of the MartyrRank: D
Description: User soaks their blood into their hair to create a long whip that can be controlled by will. Costs 1/4 pint of blood.
Ricochet Blood BulletRank: C
Description: Same thing as Blood Bullet, but the added Ki lets the bullet be capable of ricocheting off of hard surfaces until it hits an opponent. Can be very unpredictable and difficult to dodge. Power remains at original D-rank. Costs 1/4 pint of blood.
Blood BladesRank: C
Description: User soaks their hand with their blood, whether this be from a cut or open wound, and slashes at an opponent to send out a flurry of crescent-shaped blades to cut up their enemies.
Bloody WingsRank: C
Description: The user makes two small incisions along the outside of their forearm and grow 2ft long crescent-shaped blades out of their blood. Costs 1/2 pint of blood. Can make just one if you want for half the blood cost. Lasts 5 posts.
Hair of the SadistRank: B
Description: A combination of the Barbed Blood Trap and Hair of the Martyr. The user thickens the blood in their hair and adds the barbed- aspect to it to make a spiked whip that can stab and shred opponents. Costs 1/2 pint of blood. Lasts 5 posts.
Stage 3 This next stage of the style focuses on increasing the versatility of the blood manipulation even further, particularly around the body so that the user learns how it can be used for defensive measures. Training for this style is thus done in a special way, where they have to win a fight against an opponent without using any ranged techniques and using at least one attack from this style. By doing this the user will instinctually learn how to spike the blood around their body or even harden it to turn a close-ranged attack on them into the enemy's undoing.
Lifeforce SealRank: C
Description: User coats their blood around a wounded area and seals it to stop the area from bleeding. Is often used on allies.
Body SpikesRank: C
Description: Used when an opponent opens up a wound on the user's body, in which the user sharpens and rushes the blood out in a solid, multi-pointed spike to stab at the opponent. Spikes last two posts.
Red-Wing ExtensionRank: C
Description: An upgrade for Bloody Wings where the user greatly extends the blades up to 20ft by thinning the blood. Because the blood has been thinned though this attack is one rank weaker. Can be restored to C-rank power by paying B-rank Ki instead of C-rank. Lasts 3 posts. Costs 1/2 pint of blood. Blood cost not needed if Bloody Wings is already activated.
Fists of BloodRank: C
Description: User wraps blood around their hands and feet to harden them and give them a coat of protection against attacks. Lasts 5 posts. Costs 1/4 pint of blood.
Crimson ShotRank: B
Description: An upgraded form of the Blood Bullet, the user spends at least one whole post charging blood into their hand to form a smaller and smaller ball of condensed blood. This can puncture holes through enemies and push through defenses that would be able to block normal B-rank powered attacks. Costs 1/2 pint of blood.
Blood ArmorRank: A
Description: Much like Fists of Blood only the user extends the armor over their entire body. Its still only as tough as the Fists of Blood though so it can block up to C-rank attacks. Costs 1 pint of blood. Lasts 5 posts. 5 post cooldown.
Stage 4 In this stage the user is rewarded for their training and mastery of the style. Assuming they have used the style in at least 3 fights up til this point, after this stage is learned the user's blood cell count doubles, allowing them to have twice as much blood to use in their techniques. Now they can lose up to 8 pints of blood before passing out, and they have to lose 2 pints before feeling the weakness they did when they lost just 1. Training for this stage can only be achieved after, oddly enough, drinking the blood of at least 4 others. The heightened energy of the user's blood breaks down their blood type so that it doesn't hurt the user, but instead converts it into a special energy that revitalizes the user's blood and increases its count. In addition, the user focuses on manipulating spilled blood, or blood thats away from the body. This includes everything from learning how to sharpen and expand it, to how to make it burn and then how to explode it like a miniature bomb.
Trail of ThornsRank: C
Description: After spilling their blood onto the floor or hard surface the user can have the blood shoot up into a direction as long, pointed spikes. The height of the spikes generally depends on how much blood has been spilled but it can range from 3-6 ft.
Bloodworks CandleRank: B
Description: User reaches down and touches a puddle of their blood to set all of their spilled blood on fire.
Handprint ExplosionRank: B
Description: After coating their own hand with blood the user can leave a bloody handprint on their opponents. Then with a snap of their fingers all of the handprints explode violently.
Lifeforce ExplosionRank: A
Description: With a snap of their fingers the user can detonate any of their spilled blood. This skill only has C-rank power. 3 post cool-down.
blood shower
Blood ShowerRank: A
Description: Once an opponent has stepped into a pool of blood the blood shoots up in tentacles that wrap around their wrists and ankles, and holds them 7 to 8ft in the air facing the ground. The tentacles wrap so tightly that Ki cannot flow to the hands or feet of the opponent, making this excellent for capture or torture. Its called the shower because users of this technique have a sadistic habit of standing under their victims and then slicing them to have their blood shower down on their face.
Stage 5 The final stage of this style takes one of the most drastic, strange, and mysterious twists. Upon trying to meditating on strengthening their blood further the user will go into a fit of pain and anguish. Then during this time they must avoid all sunlight for a week (irl) and drink blood daily, whether it is their own or otherwise. If they don't they die. On the night of the seventh day the user undergoes a vampiric change during their sleep. They grow fangs that grow longer or shorter with the input of Ki, and develop a taste for the blood of others. It becomes something like a drug to them. The blood of others tastes sweet, filling, and can even cause hallucinations with fits of ecstasy. While they do not need blood to survive, it does carry a strange trigger to their Ki which can help them regenerate from almost any wound. The sunlight no longer hurts or kills the user when they're in it, but it does appear much brighter to them and strains their eyes. Most users take up wearing sunglasses during the day because of this. On the flip side their vision becomes better in darkness than others, giving them an edge of opponents at night.
Lifeforce RejuvenationRank: C
Description: By latching their fangs onto an opponent and sucking their blood the user drains an S-rank amount of their Ki and adds it to their own.
Lifeforce RegenerationRank: B
Description: By latching their fangs onto an opponent and sucking their blood the user drains 1 pint of blood with each post and adds it to their own. The opponent suffers the same weakening effect as they do when too much of their blood is drained. If used long enough this attack can potentially kill a victim.
Lifeforce RebirthRank: A
Description: User latches their fangs onto an opponent and sucks their blood, which is then converted to a healing Ki that repairs their wounds. How long it takes to heal depends on the severity of the wound, so users may have to suck blood for extended periods and kill their victim in the process if they really want to.
post 1= heals bruises, cuts, minor poisons, minor burns, ect.
post 2= heals excessives wounds, burns, broken bones, ect.
post 3= heals fatal wounds, major burns, deadly poisons, ect.
post 4= heals any injury
Lifeforce BlastRank: S
Description: An upgraded form of Crimson Shot, the user pulls a much larger of amount of blood into their palm and charges it for one post. After charging the blood constricts to a small ball and is fired at an opponent. Moving faster than sound this attack can puncture large holes through opponents and break barriers of its rank. Costs 2 pints of blood.
Bleeding ClawRank: S
Description: User places a vertical cut along the top of one hand and a vertical cut along the palm of their other hand. Then the user places the cuts on top of each other and pulls to create a long, curved crimson blade. The user can then shoot themselves faster than sound in one direction and slice through just about anything in their way. Lasts 4 posts. 5 post cool down. Costs 2 pints of blood.