Mizu

Mizu {

Biography {

Early Life

Mizu was born in Japan around 1637–1638 to a Japanese woman who was raped by a Western man. Only four Western traders were in Japan at the time, as foreign entry had been banned since 1633. Because of her mixed heritage, particularly her blue eyes, Mizu was viewed as a “half-breed” and often concealed them with tinted glasses.

Soon after her birth, assassins killed her mother. Mizu was placed in the care of a maid who posed as her mother and raised her in the fishing village of Kohama. The woman became addicted to opium and warned Mizu never to go outside, claiming men were hunting her. To reduce suspicion, she shaved Mizu’s head to resemble a boy.

When Mizu was a child, her hut was set on fire. She escaped but believed her mother had died in the flames. She created a grave marker for her and vowed vengeance. Forced to survive by scavenging, Mizu concealed her eyes with a mask and let her hair grow. Local children, led by Taigen, bullied her for her appearance, eventually chasing her to a cliff. A meteorite crash scattered them and saved her.

Meeting Eiji

That night, the blind swordsmith Eiji came to retrieve metal from the meteorite. Mizu assisted him and later sheltered at his forge. He began involving her in simple tasks and eventually guided her in hammering steel. Over time, she became his apprentice, calling him “Swordfather.” Eiji stressed that steel must retain some “impurities” or it would break, a teaching that stayed with her.

Mizu secretly observed visiting samurai demonstrate their fighting styles for Eiji. She imitated their movements at night, training herself in multiple techniques. She did not reveal her gender or heritage to Eiji, fearing rejection.

Training and Confession

When Eiji discovered her practicing, she admitted her goal of becoming the greatest swordsman to avenge her mother. She confessed her mixed heritage, calling herself a “monster.” Eiji responded that strength could come from impurity and permitted her to continue training.

A samurai named Chiaki later arrived, claiming he sought revenge for his father’s death. Eiji suspected deception. Chiaki mocked Mizu as a “half-breed” after sparring with her. When his commissioned sword broke, Eiji exposed him as an assassin.

As Mizu grew older, she bound her chest and disguised herself as a man to increase her freedom. She also trained with weighted restraints to build strength.

Departure from Eiji

Reaching adulthood, Mizu prepared to leave on her quest. She attempted to confess her true identity to Eiji, but he stopped her. She revealed a katana she had forged from the meteorite, succeeding where he had failed. After farewells, she departed with her blade.

Reunion with Her Mother and Marriage

Mizu’s early efforts to gather information led to failure. Beaten and wounded at a black market, she collapsed near a bridge and was found by courtesans, one of whom was her presumed-dead mother. They reunited, though her mother was still addicted to opium.

Her mother arranged a marriage between Mizu and Mikio, a disgraced samurai who kept a horse ranch. Reluctantly, Mizu agreed. Though initially distant, Mikio and Mizu grew closer over time, especially after she bonded with a horse named Kai. They eventually fell in love and consummated their marriage.

Mizu revealed her past to Mikio, including her heritage and training. They sparred with weapons, but Mikio rejected her after witnessing her skill, calling her a monster. Soon after, samurai bounty hunters tracked her down. Mizu saw Mikio nearby but realized he had abandoned her. She killed the attackers in combat, then confronted both Mikio and her mother, each accusing the other of betrayal. During the confrontation, Mikio killed her mother. When he attempted to reconcile, Mizu killed him.

Beginning the Hunt

After these events, Mizu resumed her disguise and focused entirely on her vow of vengeance against her unknown Western father. She trained further in stealth and infiltration, marking her kills with tattoos on her forearm. By the start of Blue Eye Samurai, she had already eliminated one of the four Western men, later identified by Fowler as Violet.

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Personality {

Mizu is guided by logic rather than emotion. She is quiet, calculating, independent, strategic, confident, dismissive of emotion, and extremely vengeful. Within the series and in The Tale of the Ronin and the Bride, she is compared to or implied to be an Onryō (vengeful spirit of Japanese folklore), in reference to her experiences with Mikio.

She frequently takes reckless, direct risks to achieve her goals, relying on combat ability and infiltration rather than detailed planning. This approach often leaves her injured or exposes her to enemies. On at least two occasions, she would have died without intervention from Ringo.

Mizu shows indifference to the fate of communities and rulers, regarding powerful individuals as privileged and corrupt. She initially treats Akemi with contempt because of her wealth and impulsive behavior, refusing to intervene when Akemi is captured by her father’s men. In the Season One finale, she is unconcerned with the fate of Shogun Ito, blaming him for allowing Fowler into Japan. After the end of her marriage—her brief period of happiness—her only priority becomes revenge. She tells Heiji Shindo: “I have no interest in being happy… only satisfied.”

Mizu harbors self-loathing because of gender restrictions and the ostracism she faces due to her mixed heritage. She blames her unknown white father and frequently calls herself a “monster.” This identity is reinforced less by her appearance and more by her distant personality, brutal and unconventional fighting style, and fixation on vengeance. Comparisons to an Onryō provoke violent reactions. She often forgets Master Eiji’s teaching that “the strongest sword is a blend of steel, pure and impure,” and his acceptance of her despite her appearance.

Her early and adult traumas cause deep mistrust of others. She avoids emotional attachments, viewing them as distractions. She sympathizes with marginalized individuals, such as Mikio, Ringo, Eiji, and Madame Kaji’s prostitutes, but avoids commitments unless bound by her word or immediate plans. She gradually extends trust to Ringo, allowing him to assist her after he accidentally discovers her identity. She rejects Taigen’s adherence to bushido and exploits opportunities to strike without relying on others’ honor.

The only individuals she loved unconditionally were her mother and her husband Mikio, both of whom betrayed her. Believing one of them exposed her to bounty hunters, she abandoned her mother and killed Mikio when he followed her. This left her with grief and mistrust, which she buried beneath her commitment to revenge.

Despite her cultivated detachment, Mizu demonstrates compassion. In Episode 1, she gives a gold hairpin to a mother and daughter locked out of Kyoto. She prays for Master Eiji’s health and safety at a shrine.

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Appearance {

Mizu's frame is above average height, slender with a slight athletic build, blue eyes, an oval-shaped face with a pointed chin, and long black hair, which she ties up in a bun. Her regular attire, a male disguise consisting of orange-tinted spectacles with round frames to mask her blue eyes, dark grey arm warmers, a dark blue haori tied with a lighter blue obi, baggy black trousers, with darker black stockings and sandals, a white scarf tied around her neck to disguise her lack of Adam's apple and a plain brown kasa (large hat). The obi holds Mizu's katana on her left hip when not in use, favoring her right hand. As part of her commitment to her quest, she has an 'X' branded on her left arm, with plans to add a dot in each empty space representing her four possible fathers.

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