Kirigakure

is the shinobi village located in the Land of Water. As one of the five great ninja villages, Kirigakure has a Kage as its leader known as the "Mizukage". There have been five Mizukage with the current one being Mei Terumī. An unusually high number of missing-nin seem to originate from this village and as such a unique classification of ANBU known as hunter-nin are specifically tasked with eliminating these defectors. The shinobi from this village are very proficient with water release techniques.

Kirigakure's architecture is composed of several cylindrical buildings, with the Mizukage's office being the widest and largest. Befitting its name, the village is surrounded by a thick mist, with several mountains in the background, making it difficult to find by foreigners.

History
Little of Kirigakure's early history is known. The village is not known to have participated in any of the first three ninja wars. Konoha ninja, however, consistently praise Kirigakure's military. Akatsuki is rumoured to have been created in Kirigakure, though no known evidence for the rumour exists. Other villages remain suspicious of Kirigakure anyway.

Kirigakure does seem to have experienced a number of internal conflicts. The Kaguya clan once waged war against Kirigakure to quench their lust for battle. They were slaughtered by the village's superior forces. Because of the efficiency on the battlefield those with kekkei genkai have had in times of war, Kirigakure ninja and most other citizens of the Land of Water are suspicious of those with genetic abilities, and in fact have persecuted them in the past.

During the reign of Yagura, the Fourth Mizukage, Kirigakure began using a new graduation ritual for their academy. Students wishing to move on into the ranks of the ninja would be pitted against each other in one-on-one duels to the death, thus earning the village the nickname. Students who did exceptionally well during the graduation became prime candidates for the Seven Ninja Swordsmen of the Mist, a group of ninja skilled with bladed weapons.

The years of the "Bloody Mist" were a time of great turmoil for the village; ninja began craving power and took part in questionable activities. Kisame Hoshigaki, a member of the Seven Swordsmen and one of the strongest ninja to have been produced by the village, defected after he tried to overthrow the government and assassinated several officials. The graduation exam itself was discontinued after Zabuza Momochi, not yet in the academy, killed an entire graduating class. He too would join the Seven Swordsmen and then defect after his failed attempt to assassinate the Mizukage. Despite being the reason for the village's infamy, many Kirigakure ninja believe Yagura was being controlled by someone, which was confirmed to be Madara Uchiha, whom Kisame swore loyalty to.

Kirigakure had two tailed beasts in its possession: the Three-Tails and the Six-Tails. The Three-Tails was sealed within Yagura, though it was later removed from his body and allowed to roam free for unknown reasons. The Six-Tails' host, Utakata, was captured and had his tailed beast extracted by Akatsuki. Utakata's capture is the subject of its own arc in the anime.

Trivia

 * The second fanbook gives Kirigakure a population size of two out of five stars, a military strength of three out of five stars, and an economic strength of two out of five stars.
 * Kirigakure does not seem to have a ninja registration system.
 * Despite the persecution of people with kekkei genkai in the past, the village's current Mizukage has two kekkei genkai.
 * The village's name shares the surname of the famous fictional ninja, Kirigakure Saizō.
 * During the second fight between Zabuza Momochi and Kakashi Hatake, the former used a kunai with an edge of the blade curving inward, making the point sharper and more suited for stabbing or thrusting. Later in the anime, this blade was depicted as Kirigakure's special variation of the standard kunai.
 * A trademark technique of this village is the Hidden Mist Technique, which is also the namesake of the village.