Kei Uzuki

Kei Uzuki (有う月づき憬けい Uzuki Kei?), also known as “X” or “Slur” (×スラー Surā?), is the main antagonist of the Sakamoto Days series. He is a serial killer seeking to overthrow the JAA with a group of fellow assassins. Roughly around the same time Taro Sakamoto was given his bounty, Uzuki slaughtered one-fourth of the assassin industry, leaving a large ‘X’ mark at the scene of his crimes written with the blood of his victims.

Appearance

Uzuki is a seemingly slim man of average height. He has medium-length white hair (blond in the digital colored manga) with a long fringe that often covers part of his emotionless blue, cat-like eyes, also covering even his nose when leaning forward. His hair also covers his ears and is styled in a messy, middle-part haircut. He usually wears a light grey turtleneck (light orange in the digital-colored manga) under a greyish-yellow coat (beige in the digital-colored manga) that reaches below his knees, alongside black pants (grey in the anime and beige in the digital-colored manga) and formal black shoes.

When he was younger, during his time at the JCC, Uzuki wore the same turtleneck along with the same black pants and shoes but without the coat.

After regaining control of his body, Shinaya described Uzuki as a good-looking man with white hair and a white suit.

Personality

Main Personality (Kei Uzuki)
Kei Uzuki was initially portrayed as a calm and cold man, being able to kill a quarter of the assassins in cold blood without a hint of words. He is also a sadist, considering he almost lack any remorse for his killings and provoked Sakamoto by mentioning his 6-years old daughter when the latter refused to fight with the intention of taking the former’s life, hinting that he may harm Sakamoto’s family if he were to be left alive.

However, during his groups attack on the JAA, Uzuki showed a friendlier, more caring side which was seen through his conversation with Gaku and the remorse he felt at Uda’s self-sacrifice for the others to escape Takamura. As he demonstrated multiple times, Uzuki’s cold and deadly personality changes radically whenever he is alone with his friends or those he cares about, showing a softer and friendlier side of him which also seems more vulnerable.

In the past, Uzuki was shown as a reserved, timid, and shy person who firmly believed that killing is wrong and did not kill assassins unless required by the mission or the specific target. His older brother Sei Asaki took advantage of it by threatening to kill Gaku and Uzuki’s other friends in the orphanage where he was born if he failed to uphold his end of a deal. Asaki’s threats might also have been the reason why Uzuki’s main goal, after completing the mission to escort both the daughter and wife of the JAA chairman to safety, was to return to the orphanage where he was raised and save all his friends. His accidental murder of Rion Akao led to him abandoning his morals and become the villain that he is today.

Uzuki suffers from Dissociative Identity Disorder, a condition which developed as a way for Uzuki to deal with the trauma. This condition allows Uzuki to create multiple personas, changing his own characteristics to match those of a specific individual; these personas remain even after the person they’re based on dies and are so accurate that even other people who were close to the person whom Uzuki is emulating have trouble telling the difference, an example of this would be Sakamoto and Nagumo who admitted that Uzuki’s Rion persona resembled their old friend so closely that it’s hard to distinguish between the real Rion and Rion-Uzuki. Since the death of Haruma, Gaku’s unknown fate, and the seeming assimilation of the Takamura personality, Uzuki has become a jaded and uncaring individual, a shell of his former self. He seemingly no longer cares about his foster siblings, letting the Rion Akao personality influence his opinions on Tenkyu and is fixated on the goal of destroying the Japanese Association of Assassins no matter the cost.

Relationships

Gaku
Gaku and Uzuki first met at the Al-Kamar orphanage, where they were both raised as potential new members of the Order. Uzuki has demonstrated multiple times that he cares about Gaku and trusts him deeply, whom he considered as his own brother, as evidenced when Asaki took an 13-years old Gaku hostage and threatened to kill him if Uzuki failed to complete his mission to kill Kindaka.[2][3] After Uzuki indiscriminately murdered 34 people at the orphanage and saved Gaku, along with all the other teenagers, he then formed a group with them. Both Gaku and Uzuki seem to get along well together, mainly talking whenever there’s a need to discuss the mission or anything related to the JAA. Gaku appears to be Uzuki’s right-hand man in the whole group and also the one Uzuki trusts the most.

Sei Asaki
Asaki is Uzuki’s older brother. As shown during the Taro Sakamoto’s Past Arc, Uzuki used to fear his older brother. Asaki mostly used him for killing, exploiting Uzuki’s reserved and timid personality and often threatening to harm his friends if he refused to cooperate. Later on, after Uzuki became Slur, he attempted to kill Asaki, who was the JAA chairman, showing that he no longer feared or felt timid around him. He ordered Nagumo to kill whoever had taken over Uzuki’s body during the Assassin Exhibition of the Century Arc and showed concern about Uzuki, asking why he had disappeared, although it is unknown whether this is genuine or an attempt to guilt-trip Uzuki.

Rion Akao
Uzuki first encountered Rion during their time as students at the JCC, just before they were about to depart for Kindaka to fulfill their mission. Rion consistently displayed friendly behavior towards Uzuki, who coldly rejected it. The two later reconciled and warmed up to each other during the mission. Following the deaths of both Higuchi and Kobayashi, Kindaka sacrificed himself to save Uzuki by providing him with the antidote, a moment that Rion noticed. Uzuki’s response was to flee with Rion in pursuit.

Skills & Abilities

Overall Skill Level: Uzuki is the leader of his eponymous group, X’s Organization, and an extremely powerful assassin. He has demonstrated multiple times his immense abilities as an assassin and is insanely skillful.

Master Combatant: Uzuki is an incredibly skilled fighter, capable of massacring a quarter of the assassin industry, a feat so great that the Order had to step in.

Enhanced Speed and Reflexes: Uzuki is able to move extremely fast, appearing behind his opponents without them noticing. He is so fast that he is able to stab an out of shape Sakamoto in the stomach and even catch him off-guard with a swing of his whip, which Sakamoto didn’t even notice until after the fight. He has also managed to slash both Shin and Asakura’s abdomens before they even noticed or felt it.

Enhanced Durability: Despite his skinny body, Uzuki is an extremely durable individual, as he was able to keep up with Sakamoto’s blinding speed during their brief fight. He has also managed to survive being slashed by Takamura and catch off his katana.

Enhanced Endurance: Uzuki managed to somehow survive numerous stabbings in the chest by Sakamoto.

Equipment

Sword-Whip: Uzuki uses a sword-whip, made of a metallic blade divided in multiple sections of a segmented blade which Uzuki uses with long-range attacks and still be able to counter at close range. By using his sword-whip, he managed to temporary block Takamura’s arm, forcing him to cut it off and attach it back since he was unable to free from the weapon’s grasp.

Katana: Uzuki has used Takamura’s katana, stolen from Takamura during combat after manifesting a new Takamura persona. The katana is extremely sharp and durable, capable of slicing through thick steel and concrete with no visible damage to the katana.

(Read Full Info Source: Kei Uzuki Fandom Wiki, used under CC BY-SA license)