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Little is known of the former 3 captains history, what we do know when he was a child Gin saved Rangiku Matsumoto from dying of starvation, ever since then the two have been close friends. In later years Gin joined the soul society along with Rangiku and soon Gin was noticed as a child prodigy, his skills soon became noticed and he graduated from the academy in under a year. He first joined 5 division. A few years later Gin killed the 3 seat of the division and soon was taken under the wing of Sosuke Aizen and made a lieutenant. The two become very devious which is noticed by the tenth captain. Gin often speaks to Byakuya and plays with her mind which later leads to an attack which is soon stopped by the tenth. Shortly after this Gin along with Aizen betray the soul society and vanishes.
Most people remember Gin for his fox like expression that is later picked up on by Ichigo nicknaming him fox face. A large smile is never far from the captains face, but it is not a happy smile more a sadistic one along with his two silted eyes that convey his true feelings. Gin has silver hair that comes down just of his shoulders and has a very pale complexion. But it is his smile that never leaves his face that make most feel uneasy, The only time you can tell if Gin is annoyed is by his eyes, they go from slit to open and you can finally see his eyes, It is unsure what his true eye color is as it forever seems to be changing. This along with his sarcastic nature often leads for people to mistrust him, it was once commented that it feels like a snake wrapping itself round your neck when he speak of you. His way of speaking is very informal and he often romanizes words, he seems to take great pleasure in taunting people.
The first time we meet the smiling Gin is when Ichigo and others try to break into the Soul Society, Jidanbo the gate guardian is beaten in battle and allows Ichigo entrance as the giant opens the gate the team are faced with Gin. As punishment Gin cuts of the giants arms and this enrages Ichigo and the two start to battle, soon Gin pulls his weapon and knocks Ichigo and the group out of the soul society. When Gin returns the rest of the captains epically the tenth questions why he was unable to kill the intruders. He simple replies he does not know. It later comes to light that he was infact order by Aizen not to kill them as they would distract the soul society from what Aizen had planned. Shortly after Aizen appears dead pinned to the wall of the Soul Society suspicion is cast on Gin and covering Aizens tracks to allow him to kill those who he needs to. After a brief encounter with the tenth captain Gin flees the scene and Aizen soon reveals his true plan much to the shock of the whole Soul Society. The group vanish as they do Gin says farewell to Rangiku, where he says sorry and his smile vanishes.
During the course fo the anime and manga Gin is shown to have grown up with Rangiku Matsumoto, their relationship isn't fully explained but it is common belief that Rangiku is the only person Gin truly cares about. He saved her when she was dying of starvation, gave her food and a place to live. They continued to be good friends into adulthood, despite the fact that Gin would frequently dissapear without any warning to where he was going or what he was doing.
Later we see Gin along with Aizen and Gin mocks him for playing with his subordinates. We do not see Gin again for awhile until Ichigo and his team are breaking into Las Noches. Gin merely watches them and changes the direction of the halls as they move. Ulquiorra Schiffer watches him and confronts him, when he does Gin denies everything with one of his larger smiles once again Gin drops of the radar along with Aizen for a while until he later reappears along with Tosen in the town center of Karakura as they unleash a large amount of Hollows on the town Aizen smiles and says there is a lot of old faces that he has not seen in a while and the battle continues. however it was later reaveled that Gin wanted revenge on Aizen for Killing his friend.
Gin after he betrays the Soul Society
Powers & Abilities
Hailed as a child prodigy, his skills and abilities were very much evident that he was able to graduate from the within a year.
Manipulative and deceptive, Gin can also be considered as strategically gifted. This is shown when when battling another child genius, Hitsugaya. He manages to take the upper hand by easily manipulating the positions of lieutenants, Kira and Hinamari, so Hitsuguya has to choose taking his life or Hinamori's.
Spirit Power - Gin's spirit powers are typical of a captain class Shinigami and has been shown to easily incapacitate the others with his spiritual pressure by just glancings towards their direction.
Swordsmanship - Deadly with a wakizashi despite the sword's disadvantage of a shorter reach. Sure of his own swordmanship skills, Gin is normally unfazed by his opponent's own sword skills even when they may have the advantage.
Shinso the "Divine Spear"
Gin's zanpakuto's unreleased form form takes on the appearance of an ordinary wakizashi.
The name of Gin's zanpakuto is Shinso (Divine Spear). An ideal name as when Gin calls out Ikorose Shinso ("Shoot to Kill"), Shinso glows white and projects at high speed that is capable of impaling his opponent. The force is so great it can shatter other zankuptos.
BankaiKamishini no yari(God killing spear) In its bankai state gins zanpaktou doesn't change at all rather gaining the ability to stretch farther and at a higher speed than his shikai. The blades cutting power is also increased. The blade can reach up to thirteen kilometers and is said to go five hundred times faster than sound and is able to retract at the same rate.
Poison: Kamishini no yari hides a deadly poison between the crooks of the blade capable of dissolving and breaking down cells within the body.