Shinigami character

I didnt know where else to put this, but he isint a rogue from Soul Society.

Name: Nikorasu Yamada

Age: 21

Gender: Male

Appearance Information

Height: 6 feet 2 inches

Weight: 206 pounds

Clothes: Changes Daily, though his favorite garments consist of Long blue or black jeans, short sleeved shirts of various colors and designs and an occasional Jacket if it is cold enough.

General Appearance: He is tall with short cut dark blond hair, looks almost brown. His eyes are dark green, but may be mistaken as blue under a certain light. He has a scar of his forehead that was given to him during a hollow attack when he was young.

Strengths: He has great speed and agility as well as a strong will. His greatest strength is his overall ability growth rate when it comes to training under new conditions.

Weaknesses: He has low physical strength and endurance and has a tendency to argue with his Zanpakuto, even in the middle of fights which causes him to lose focus.

Personality: Nikorasu is a silent loner. He tends to keep to himself almost always, opening up only around those he can relate to, but even this is a rare occurrence. He doesn't find pleasure from activities that most other people his age do. He can also be seen as a very cold person as he tends to not worry or bother with the problems of others around him.

History: Nikrasu grew up in a small town just outside Karakura town with his mother and two brothers. His father had left the family shortly after he was born and nobody has seen him since. His childhood was pretty much normal for an ordinary boy growing up with no father, two older siblings and a mother who works herself to the bone to make a living though he tried his best to make it work.Though he lived a normal life with his family the same could not be said about his 'inner world'. His time dealing with the problems of his family had caused him to isolate himself from others entirely, even his own mother.
Just as he thought his life couldn't get harsher, at the age of 11 he began seeing strange things, in both everyday life and his own dreams. One day as he was doing some homework a strange voice called out to him, the voice beckoned him to the families attic, a place his mother had warned him was off limits. Ignoring his mothers orders he entered the attic one night and found a sword resting against the far wall. Intrigued by the sight of the blade he took it outside so he could test it out. For months he practiced with the sword in secret and as his skills improved so did his dreams and ability to see spirits.
One faithful night while he was training with the blade a hollow appeared before him to attack, though he was still rough around the edges he held his own against the beast before receiving a blow to the head before seeing a shinigami slay the hollow in front of him. The shinigami noticed Niko's strength and told him he had the powers of a shinigami and decided to train him, but refuses to tell him what the shinigami were or where they originated. He was quick to learn as the stranger thought him the ways of Zanjutsu, Hakuda and hoho, though Kido was far from his understanding. After his training the stranger, fearful Soul society would seek his powers for use in the Gotei 13 secretly destroyed his body and replaced it with a untraceable Gigai instead before leaving to never be seen again...
His years after that were pretty bland even though he was now considered a Shinigami, a term he was told by the man who trained him but one he didn't really understand. Though he continued to live a normal life as a human he would occasionally rush off to defeat a hollow's or to test his skills. But as time passed, and his own natural curiosity grew, he started to think that he could do more with his powers. So one day he packed his belongings and went off to meet with one of the several shinigami stationed in the town that he had seen from time to time and went on to the Soul Society to further hone his skills.

Division: Not Affiliated with Soul Society

Rank/Seat: Not Affiliated with Soul Society

Zanpakuto: Hebishuurai (Serpent lightning strike)

Sealed form: The sealed for of Soyokazekiba is a plain Katana in actual size. A dull white fabric is tied right under the guard of the sword and twists down the length of the hilt before vanishing under a gold pommel and reappearing as a tassel that hands freely from it. Its guard is circular is shape and is about a half inch wide.

Shikai Information: When released the edge of Hebishuurai's blade splits into two parallel blades that occupy the same hilt and guard. The blades themselves also change considerably. Each one's edge grows out past their blade and curl upward to look like a snakes fang. The area between the two blades courses with a current of lightning that can be fired out from said area, or to be augmented with the blades for various attack patterns.

Zanpakuto's Spirit: Twin headed winged snake, the snakes skin is a dull white and both heads have separate personalities.

Zanpakuto's Element: Combat Zanpakuto, Lightning element.

Bankai: Not achieved yet.

Kidou: None known.