Kōga Kuchiki

is a rogue Shinigami who once revolted against the Seireitei. He was also a member of the Kuchiki noble family, having married into it.

Appearance
Kōga was is a tall and lean-built Shinigami with black hair that hands on the right side of his face to frame it. In addition to a standard Shinigami attire, Kōga also wears a red long red scarf, long wristbands, and a beaded-necklace and an intricate white headpiece on the left side of his head.

Personality
In the past, Kōga was a man with a true sense of duty and a commitment to making his family proud. He always tried to remain humble and serious to situations at hand. On the inside however, Kōga was a man who deeply desired to be acknowledged for his abilities and hard work.

History
Several hundred years before the main storyline, Kōga was welcomed into the Kuchiki family as the son-in-law of the Ginrei Kuchiki. He soon gain much respect through Soul Society. Unfortunately, the one person Kōga wanted to be acknowledged by, his father-in-law Ginrei, always looked at him with indifference and put him through tests. The only person to ever comfort Kōga at all was his Zanpakuto Muramasa. Kōga later became a powerful ally in a civil war. When it became clear that he may very well be the key to winning the war, the enemies, which included 3 captains, came up with a plan to frame him as a traitor. He was later freed by Muramsa and soon revolted against the Seireitei. The Shinigami were eventually able to seal Kōga away. Kōga's revolt was never recorded in the Soul Society's history.

Synopsis
Kōga was sealed away, but his Zanpakutō Muramasa eventually resurfaces and begins to initiate a Zanpakutō rebellion. When Ichigo Kurosaki encounters Muramasa, he states that he already killed his master. However, after Muramasa gains control over Ryūjin Jakka, Genryūsai Shigekuni Yamamoto reveals that Muramasa is planning to break Kōga's seal. He also states that Muramasa is heading to Karakura Town, where Kōga was sealed.

Muramasa eventually arrives at the location where Kōga was sealed, but he comes into conflict with Orihime Inoue, Uryū Ishida, Yasutora Sado, and Rukia Kuchiki. He ultimately succeeds breaking Kōga's seal. As Ichigo arrives to stop him, Kōga begins to awaken. Suprisingly, upn regaining his consciousness and seeing Muramasa, he stabbed his former partner.

Powers & Abilities
While not born into the noble clan of Kuchiki, Kōga is a man with who was praised with immense natural abilities. His father-in-law Ginrei, who was a captain at the time, stated that despite not even being a 3rd Seat yet, was greatly stronger than the captain, making Kōga a captain-level fighter.

Master Swordsmanship Specialist: Even with his sealed Zanpakutō, Kōga was an immensely powerful combatant, able to easily take down a large group of enemies.

Immense Spiritual Energy: As not be even the likes of Yamamoto, Kōga possessed great power despite his young age. Even after centuries of being sealed away, he still possessed great power upon being awakened.

Zanpakutō

 * Kōga's Zanpakutō takes the form of a standard wakizashi with a purple hilt-wrapping and a guard in a shape similar to the Kidō Corps' emblem, consisting of a circle with a triangle-like shape in the center and three points protruding from the edges evenly spaced apart.


 * Shikai: The release command is "Whisper" Muramasa shines with bright purple light to engulf a considerable radius, affecting any and all targets within it.
 * Shikai Special Ability: Muramasa can break into the inner world of targets and forces them to bend to the user's will. It can cause a Zanpakutō's spirit to abandon its master and attack them.
 * Bankai: Not Yet Achieved.
 * Bankai: Not Yet Achieved.