Gender: Male Age: 26 Stats: 180cm / 73kg Affiliation: Kansai Killer High School -> ORDER -> Unaffiliated (Betrayed the ORDER) Weapon: Claw Hammer Hobbies: Visiting ramen shops, cleaning Likes: Ramen, coffee Dislikes: Onions Appearance: Long blonde hair, blue sanpaku eyes with a sharp gaze. Usually wears his hair tied back in a ponytail. Personality: Even in a series full of dry characters, he is notably cool and stoic. However, as a Kyoto native, he has a strong spirit and occasionally shows a sly, mocking side. Combat Ability: Proven to be a top-tier fighter within the ORDER. He defeated his former superior, Satoru Yotsumura, in a 1v1 during the Kyoto arc. During the Century's Killer Exhibition arc, he held his own in a 2v1 against Slur's subordinates, Kumanomi and Haruma. While he prefers the hammer for its ease of use, he is proficient with other weapons. The fight with Yotsumura was a close call where a single mistake could have been fatal, and he lost two fingers, suggesting their skill gap was narrow. However, considering Yotsumura was a founder of the ORDER and a mentor to Sakamoto, Nagumo, and Akao, Shishiba's victory cements him as one of the strongest in the world. Traits: Speaks in a Kansai dialect (Kyoto/Gyeongsang style).

Gender: Male Age: 19+ Family: Younger sister, Shiina Saionji Weapon: Special Metal Bat Weapon Description: Uses a uniquely shaped metal bat. He demonstrated enough power to disperse all the water in a pool just by swinging it underwater and smashed through a secret room made of a special alloy that 'human strength' supposedly couldn't break. This is due to Kippei's superhuman strength and physical ability, but the bat's durability to withstand such force is also remarkable. The bat features sharp grooves, allowing it to be used for decapitation. Affiliation: Kansai Killer High School -> New Slur's Group Personality: Unlike his sister Shiina, he is passive and cautious. However, he becomes extremely aggressive if his sister is harmed. Combat Ability: Prefers to avoid combat and rarely takes the lead. He overprotects his sister and often seems pushed around by her blunt remarks. However, when his sister is in danger or he decides to fight seriously, he possesses overwhelming skill, decapitating JCC staff members so fast no one notices. He noted that "saying it can't be broken by human strength means it can be broken if you surpass that level," suggesting his physical stats, like Osaragi or Hyo, transcend human limits. He easily blocked ambushes from Toramaru and Amane, throwing them into pillars, and detected Natsuki (in a stealth suit) and Mafuyu just by sound. Even underwater, he predicted movements by observing tiny bubbles. He remains eerily calm, with a constant heart rate and a body temperature so low it barely registers on thermal cameras. Tier: ORDER-level powerhouse. Traits: Speaks in a Kansai dialect.

Gender: Female Age: 19+ Family: Older brother, Kippei Saionji Weapon: Gatling Gun Affiliation: Kansai Killer High School -> New Slur's Group Personality: The opposite of her brother Kippei; she is energetic and acts before she thinks. Combat Ability: Top of the class in the Kansai Killer High School Assassination Department and one of the record holders for the highest graduation exam score. She is skilled enough to massacre average JCC staff members single-handedly. She uses a massive Gatling gun, usually kept in a case. She favors a frontal assault style, using the gun's firepower to blast through concrete walls and people simultaneously. She can suppress multiple enemies with rapid fire. The gun has a built-in handle that allows it to transform into a hammer for destructive melee combat. However, her aggressive and hot-tempered nature leads to occasional carelessness. Overall, while her firepower and breakthrough abilities are elite, her lack of composure and situational adaptability place her as a high-mid tier fighter in the setting. Traits: Speaks in a Kansai dialect.