Chōjūrō

is a member of the Seven Ninja Swordsmen of the Mist, wielder of a double-handled sword named Hiramekarei. He is one of two Kirigakure ninja selected to escort the Fifth Mizukage to the Kage summit.

Appearance
Chōjūrō has sharp, shark-like teeth, a trait that Zabuza Momochi, Kisame Hoshigaki, and Suigetsu Hozuki have; all of these characters are associated with the famed Seven Ninja Swordsmen of Kirigakure. He wears black-rimmed glasses connected to what appear to be headphones. He also wears a striped shirt and camouflage pattern pants that resemble the clothing Zabuza wore during his first appearance. Also, he wears his forehead protector like a badge on his chest. He has Hiramekarei on his back wrapped around large bandages. He also has one shuriken holder on each leg.

Personality
Despite his membership in the Seven Swordsmen, he is shy, and he seems to lack confidence in his abilities. He also appears to have a crush on the Fifth Mizukage, as he commented inwardly on wanting to protect her 'beautiful smile'.

Abilities
Chōjūrō is a sword-user, and wields a dual-handled sword called the Hiramekarei, that is linked together at the handles by a chain. When it is unsealed from the bandages, it releases chakra that is shaped into an enormous hammer. He is shown to have enough strength to swing Hiramekarei in its hammer form, even sending an opponent flying a considerable distance through a wall. However, carrying the heavy sword for an extended amount of time does tire Chōjūrō out, similar to Suigetsu Hōzuki.

Five Kage Summit arc
Chōjūrō and Ao were chosen to escort the Fifth Mizukage to the Kage Summit. During their trip to the Land of Iron, Chōjūrō was frequently embarrassed by the Mizukage's concern over him, which earned him scolding from Ao. Once they finally arrived and the meeting began, Ao and Chōjūrō fulfilled their duty of guarding the Mizukage, coming to her aid during the Fourth Raikage's outburst and Zetsu's appearance.

When Sasuke Uchiha infiltrated the summit, Chōjūrō activated Hiramekarei and used it to knock Sasuke into an adjacent hall where the Mizukage could fight him alone. Although Sasuke was able to escape, his actions convinced the Kage to begin working together. As a sign of good faith, Chōjūrō told those in attendance about Kisame Hoshigaki and his Samehada.

After leaving the Summit with Mei, they followed Ao, who was following Danzō. When they reached Ao, the Mizukage stopped Ao from beheading himself. She realized that he was under an enemy's control, and requested to use Hiramekarei to force him out. Fū insulted her upon learning that she knew he wasn't really Ao, and she quickly punched Ao before realizing that the opponent had already left.

Trivia

 * As with the other shinobi associated with the Seven Swordsmen, Chōjūrō's name is derived from a fruit.  is an Asian pear, while, , and  refer to peaches, dried persimmons, and winter cherries, respectively.
 * Out of the known members of the Seven Ninja Swordsmen of the Mist, Chōjurō is the only known member that is not a missing-nin, and that is still alive.

Quotes

 * (To the Fifth Mizukage about Ao) "Good thing you didn't use Hiramekarei on him."
 * (About Kisame) "Put him and that blade together, and you have a human who is able to wield every bit as much power as a jinchūriki... effectively a tailed beast without a tail"