Kazuma is thought to not think before he acts, but this proves to be false. He does think, but rather quickly. He is headstrong, a trait that causes he and Ryuho to be bitter rivals. He claims he doesn't have a last name on multiple occasions. Kazuma has a unbreakable will and he has proven that under no circumstances will he ever give up or admit defeat. Kazuma is also incredibly rebellious and hates the thought of being controlled by anyone. Though, he claims to be a selfish alter user who will do anything for the right price, this is not true as Kazuma will challenge any foe or odds to protect innocent people without hesitation, especially the ones he cares for. He is also obsessed with defeating Ryuho, whom he sees as an enemy. Over time, however, Kazuma learns to respect Ryuho.
Kazuma Torisuna, Kazuma the Shell Bullet
S-CRY-ED, DC, Marvel, My Hero Academia, crossovers within reason.
The original manifestation of Kazuma's Alter. It is an alloy-type Alter which transforms his right arm into a weapon. After dematerializing the sufficient quantity of matter (typically the mass stored in a small automobile), Kazuma transmutes it briefly into Alter energy before reforming it into matter enameling his right arm. At its first level, Shell Bullet covers Kazuma's right arm with protective metal armor, which is mostly golden in color but with orange and gray sections. Also, Kazuma's right hand is divided into orange and red plating, with metallic claws for fingernails and 3 red curved fins of metal jutting out from his right shoulder blade that store potential Alter energy, each progressively larger as they near his shoulder (in actuality, it is the middle fin that is the largest one), are created. The fins break apart & release the potential Alter energy that burst outwards to propel Kazuma forward at great speed, increasing the power of his strikes, which Kazuma labels as "Bullets", giving them names that represent their power or affect on the opponent.
Shocking First Bullet: The 1st and weakest of the 3 "Bullets" that Kazuma can use in Stage 1. Shattering the most downward Alter power fin (the smallest, which, therefore, is in possession of basic-level Alter power), Kazuma begins to slide across the ground and pivot repeatedly in order to either maintain or increase his momentum, before thrusting his fist at the target and unleashing a powerful wave of force. Kazuma managed to collapse an entire office building by striking its top surface with this Bullet.
Annihilating Second Bullet: The 2nd and intermediate of the "Bullets" that Kazuma can use in this "Alter" stage. Functions the same as "Shocking First Bullet", except that it is the middle/central fin that gets destroyed and the firepower is increased: Kazuma was capable of destroying the large, steel entrance gate to the "Lost Ground" city with this move (likely approaching city block-busting levels, given the quantity of reinforced steel present).
Obliterating Last Bullet: The third and strongest of the three "Bullets" that Kazuma can use in this "Alter" stage. Functions the same as "Shocking First Bullet" and "Annihilating Second Bullet", except that it is the highest fin that gets destroyed and the firepower is further increased: This is the attack that ranks Kazuma at multi city block-busting power, capable of wiping out hundreds of thousands of cubic meters worth of rock in energy collisions with equally-powerful "Alter" users.
Stage 2: Shell Bullet Ultimate
The first evolution of Kazuma's Alter, attained after the Shell Bullet interacted with Alter parallel dimension-native material (namely, a piece of "The Crystal" Alter's rib-cage). After matter is de-materialized and reformed onto Kazuma's right arm, it now takes the appearance of a predominantly-orange plating that now extends across half of the limb's length before segmenting in half. The armor is thicker and is later revealed to replace his entire arm instead of simply covering it. For some reason, whenever summoned, it possesses a small, grey or silver brace on its wrist that falls off when used, possibly serving as a sort of temporary lock until he decides to use his arm; in that case, it disengages from his arm by way of destruction via the arm opening for use. 4 orange fins appear/extend around the corresponding side of Kazuma's face (towards his right eye), and a large, golden propeller is located where the 3 red fins used to be. This propeller grants Kazuma flight, as well as eliminating the firing limit imposed by Stage 1. On his fist is a small aperture which can absorb additional Alter power, further strengthening his attacks, which he calls Shell Bullets. Also, this stage of Shell Bullet is the only one that demonstrates regenerative properties, as it was once damaged and severed from Kazuma's body and then reattached itself to him by de-materializing and reforming back into its place.
Shell Bullet: Uses the propeller on his back to propel himself forward while gathering alter energy from the duct on his arm, this was the technique he used when he caused the second upheaval of the grounds with Ryuho.
Energy Absorbtion: The aperture duct embedded into Kazuma's right hand is capable of absorbing atmospheric traces of "Alter" energy in the local environment and redirecting it into his personal reserves. This is the primary method of Shell Bullet Ultimate, with Kazuma gaining the energy needed for his special attacks.
Shell Bullet Burst: Kazuma channels all of his collected Alter energy into his aperture, causing a blinding golden light to emit from his right hand, before throwing a punch at a target. The resulting strike releases all of the energy in one blast, extending well beyond Kazuma's melee range (effective to at least dozens of meters) and retaining the golden luminance in the shape of a fist. Capable of immediately disintegrating the structure of Biff's Hammer Alter after its refinement.
Before charging up the propeller, he uses his duct to gather energy. While in this process, he has a habit of announcing "More power... AND MORE!! AND MORE!!!! SHINE BRIGHTER!!!!!!!!!!", often roaring the last verse.
Stage 3: Proud Fist
In his final form, achieved from pushing himself and his ability beyond his natural limits with his resolve to defeat Kyoji Mujo and avenge all of his fallen comrades at the hands of the mainland Alter user, Kazuma's Alter, which previously extended only the length of his right arm and individual pieces on his right shoulder region, now traverses across his entire form as a type of "bodysuit", streamlined to his body and sharing the same color scheme as his right arm. The four-fin face-pieces have now fused and extended across to form a mask, while a large wave of jagged, red "hair" juts upwards from the mask, causing him to appear as a humanoid cross between a samurai and a lion. His Alter energy-absorbing arm grows even larger than his second form and, in addition, his left arm becomes armored and possesses an aperture duct, and his propeller is replaced by a long, flexible, tail-like appendage which acts like a whip, serving much the same purpose as the fins from the first form or the propeller in the second form did (no longer requiring the latter with freeform flight), acting in the same manner as an anti-gravitational propulsion unit used to push himself wherever he wished to soar at high speeds. In addition to this appendage, a secondary, smaller one appears on the back of his left side (which could indicate that his final form could become much stronger over time, as the smaller appendage may grow to the size of the whip on his right side). After using this power, Kazuma has several connecting scars on his arm that originally held his Alter power at Stage 1.
Dimensional B.F.R. (Big Fat Rift): With his humungous boost in raw power, Kazuma can distort the fabric of space with his punches and voluntarily tear open a rift to the Alter dimension parallel to the real world. From there, he can throw opponents inside to banish them to it; once his desired victim is inside, the rift closes and seals them within, trapping them in the Alter dimension permanently, and only fellow Alter users that attain a similar evolution to Kazuma or Ryuho (the mutated Kyoji Mujo) are capable of escaping from the parallel realm. The tear can extend for up to several kilometers in horizontal length (left to right, vice versa), allowing the banishment of more beings in a short space of time.
Giant Explosion Fist: Proud Fist Kazuma can also generate incredible, raw firepower from his standard punches, with individual strikes ranging from over 100 to several 100 kilometers in width and are capable of breaching past Earth's orbit when concentrated into beam form, or expanding across a large portion of the planet's surface (easily viewable from outer space).