Oda Ketsuryu

 "No commander stands alone, no weapon is built of a single piece. Yet where there are pieces, there are chinks, and they are an opening to exploit."-Oda Ketsuryu

The eldest son of Shingen Ketsuryu and heir of Remnant's biggest supply of weapon parts, the Ketsuryu Arms Company(K.A.C.). Oda has lived a life of challenges and rewards. Lacking in moral yet with a distaste for corporate greed, Oda is a calm yet precise person and a highly competent leader and fighter despite his asthma and ruthless behavior.

Appearance
A tall young man with black hair and dark red eyes. Oda wears a black coat with red, rib-like markings on the sides and a black shirt with his red emblem on the front. His boots are leveled up like samurai sandals due to the rockets within them. Over his clothing, he wears basic samurai armor, including shoulder plates, arm guards, gloves and kneecaps, all red with black details. His breather usually hangs around his neck, only being put on during battle or asthma attacks.

Personality
While he can be friendly, humorous and patient on formal ocasion, that is but a mask he puts on for the sake of K.A.C.'s image. Oda is a ruthless and blunt individual who sees most people as stepping stones to be used or kicked aside.

Yet, he does have a caring side. He is highly overprotective of his younger sister Oichi and is growing to care for him, as annoyed as he becomes with them at times. Oda may be arrogant, seeing himself as the best swordsman in Haven, but he has the skill and cunning to back his claim.

In his youth, he was quite the hot head. But years of punishement led him to control his temper, not calming himself but channeling his anger in a cold and steady tone which, as he comes to learn, make him all the more scarier.

Despite his straight to the point attitude and lack of patience with cheap talk, Oda can still find fun in jokes or everyday humor, even if most of the time he contains his reactions to a small smirk. Due to his pride, he is easily annoyed and frustrated when his flaws are mentioned, such as his quick reactions to insults.

His pride is also one of the main reasons he keeps his condition a secret other than his father's orders. He deems the disease a weakness and an annoyance, and keeps it a secret almost zealously. When diagnosed by others, he's quick to shoot down their theories and threaten them to silence at the first opportunity. His determination to keep it a secret also leads him to grow angry and somewhat panicky when his breather is lost or out of easy reach.

Weapon: Roku Tengoku(Sixth Heaven)
A nodachi with a barrel covering five sixths of it's spine and a dark brown wooden grip with a metal hatch and a stock shape. The tip of the blade can flip 180 and slide down to reveal a barrel even as the blade itself spins and the hatch opens to reveal a trigger, turning the katana into a tanegashima. Dust ammo is used simply to empower the shots to explode into the respective element, explosive fire bullets, icy bullets that ice the terrain, gravity bullets that begin attracting nearby objects to it, wind bullets that unleash fierce whirlwinds.

Semblance: Demon King
Oda can expand his semblance to form a massive skeletal-like aura construct around himself not unlike a gashadokuro, with an oni-like skull and a samurai crest on it's forehead. While it's being formed, a rattling noise begins and persists as Demon King moves it's limbs and a noticeable, yet minor increase of pressure in Oda's surroundings. While it can be conciously formed, Oda usually has to restrain it from forming when he gets angry, leaving him with a certain pressure in the process.

While it is being formed, and for the 5 seconds after it's complete, Demon King absorbs the damage it would be given and instead converts it into further defensive and physical prowess. Allowing it to toss Ursa Major aside or squash beowolves. While it forces Oda to remain immobile, it can be used manually or automatically, though the latter option can't accomplish more than basic commands. When infused with dust, he can form large weapons to further enhance Demon King's destructive abilities:
 * Fire Dust: An elaborate bow forms on Demon King's left hand before fiery arrows appear on his left hand. When these arrows strike a solid, they erupt in flames.
 * Ice Dust: An ice fan appears on Demon King's left hand, with a wave of it, the air around solidifies into icy shards that are flung as daggers.
 * Lightning Dust: A gigantic electric sword appears, when brought down, it releases a burst of lightning at all conductive things in the vicinity(Trees, metal rods, weapons, humans, faunus, grimm...) accompanied by a thunderous boom.
 * Gravity Dust: A massive gourd appears underneath Demon King's right arm, sucking nearby objects and people into it and containing them until Demon King is dispersed.