Kin Tsuchi

was a kunoichi from Otogakure and a member of Team Dosu which took part in the Chūnin Exams under orders from Orochimaru to test Sasuke Uchiha's skills.

Appearance
Kin had very long black hair, almost reaching down to the ground, tied by a violet ribbon right near the end, and black eyes. She wore a forehead protector, a pale green vest somewhat similar to a flak jacket, and snake patterned pants and scarf, much like her team-mates: Dosu Kinuta and Zaku Abumi.

Personality
Like her team-mates, Kin appeared to be overconfident in her abilities. She had a dislike towards Sakura due to her seemingly vanity for her hair and criticises her for focusing on her appearances rather than training. Like her team-mate Zaku, she loses focus on her opponent's tactics when overconfident and talking about her abilities. That is seen when she didn't recognise the Shadow Imitation Technique that Shikamaru was using on her while she was talking about her using her Shadow Senbon and Illusion Bell Needles. Kin also appeared to prefer to toy with her opponents by defeating them slowly and painfully as stated by her during her fight with Shikamaru in the preliminaries.

Abilities
Kin was an accomplished senbon user, as seen in the Chūnin Exams. When she was ordered by Zaku Abumi to "finish Sakura", she reached into her back pocket and grasped senbon instead of a kunai or another weapon. She could also attempt to strike her opponent's vital spots with them in order to inflict more damage, as seen during her fight with Shikamaru. She normally used them in tandem with the Shadow Senbon technique to make it harder for her enemy to dodge. In the anime, she also demonstrated a much more powerful technique, Illusion Bell Needles, a genjutsu supported by her use of senbon. It is also notable that Kin is the only member of her team to not have a physical alteration.

Chūnin Exam Arc
Team Dosu traveled to Konohagakure to participate in the Chūnin Exams with the goal of killing Sasuke Uchiha. Before the exam started, Kin and her teammates overheard Kabuto Yakushi talking about their village and decided to attack him. After attacking Kabuto, Team Dosu announced to the rest of the Konohagakure genin that they were defiantly going to pass the exam and all become Chūnin. To prevent the situation from escalating, the exam proctors, led by Ibiki Morino, appear and settle things down. Afterwards Kin passed the written portion of the Chūnin Exams and moved onto the second phase alongside his teammates. During the second phase of the exam, Dosu initiated the team's real mission of killing Sasuke. After several days in the Forest of Death, Team Dosu finds Sakura alongside her injured teammates. Seeing an opportunity to kill Sasuke, Team Dosu attacked Sakura, activating her traps she had hidden. Easily getting passed the traps, Team Dosu was immediately attacked by Rock Lee.

After a short fight, Dosu defeated Lee, leaving Sakura to fight the Otogakure genin. Soon after Kin manage to immobilize Sakura by grabbing her hair, and in the process, criticize her on putting more effort on her appearance as opposed to her training. After finding confidence in herself, Sakura freed herself by cutting off her long hair, leading to Kin to immediately attack her with her senbon but unintentionally attacked a substitution. Soon after, Zaku managed to defeat Sakura, leading to Team 10 to arrive and confront Team Dosu. After the fighting between the two teams broke out, Ino Yamanaka used her Mind Body Switch Technique on Kin and took over her body. With Ino in control of Kin's body, she demanded Team Dosu to hand over their scroll, using Kin's body as leverage. Zaku promptly attacked her, hurting both Kunoichi in the process and knocking Kin out for the remainder of the fight. After Sasuke woke up, he swiftly defeated Zaku leading to Dosu handing his teams scroll over to Team 7 and retreated with his teammates. After Kin and her team recovered, they manage to obtain both scrolls needed to proceed into the finals and passed the second phase of the test.

After deciding to participate in the third stage preliminaries, Team Dosu reunited with Orochimaru, who was disguised as their Otogakure sensei. After watching several fights, she was matched against Shikamaru Nara. Shikamaru initially believed her trick to be a simple combination of needles with and without bells in order to make him less alert of the latter. Kin, however, followed through using her strings to ring a previously thrown bell, further confusing Shikamaru. Shikamaru countered, contracting his shadow and minimising it under the string attached to a needle she threw; she didn't notice that a string at that height would not be able to cast a shadow. Shikamaru then proceeded to use Shadow Imitation Technique to make the both of them throw a shuriken simultaneously. Still bound to Shikamaru's shadow, she was forced to mimic his actions and bent backwards to avoid the shuriken but was too close to the stadium's wall and hit her head, knocking her out.

Invasion of Konoha Arc
During the Invasion of Konoha, Orochimaru summoned the First and Second Hokage, leading to the Third to use the Dead Demon Consuming Seal to seal the deceased Hokage. After successfully sealing the two at the cost of his life, it was revealed that Kin, along with Zaku were used as sacrifices to summon the former Hokage souls.

Trivia

 * Kin is named for the sound of metal clashing, specifically samurai swords in battle. "Tsuchi" means earth. It's also the Japanese name for one of the three ear bones, hammer.
 * In addition, Kin can mean "gold" in Japanese.
 * In Finally a clash! Jōnin vs. Genin!! Indiscriminate Grand Melee Tournament Meeting!!, Kin stands beside Hanabi Hyūga before the start of the event.
 * Like many of the other characters, Kin appeared in the omake at the end of Naruto Shippūden episode 129, along with the rest of her team.

Quotes

 * (To Shikamaru) "Don't ever ask for whom the bell tolls, because it tolls for you."