Zanka Nijiku⁴

Lovely Assistaff: A simple stick that, when activated, becomes significantly sharper, allowing Zanka to cut through things. [12] Her strength also increases, allowing Zanka to lift large amounts of earth from the ground. [13] Zanka's agile and fluid fighting style allows her to use her entire body at full strength to wield her Vital Instrument and deliver a fatal blow to enemies.
Vibration detection: Zanka can stick Lovely Assistaff to the floor, allowing it to use vibrations to detect people or objects in the area even when its vision is obstructed. [14]
Inverted Spikes: Zanka can invert Lovely Assistaff's spikes, allowing her to quickly pierce Junk Beasts with her Vital Instrument. [15]

General Abilities: Zanka proves to be a formidable fighter, displaying great speed, strength, and agility in his fighting style. He is an expert in the use of Vital Instruments, especially his own. Enjin himself, a seasoned Giver, praises Zanka's skills and considers him the best at wielding Vital Instruments among the Cleansers. As a former apprentice of the Hell Guard at the Academy, Zanka was at the top of his class and received various types of training before leaving, including weapons handling and hand-to-hand combat. Zanka also received private training from his family, including his older sister, Kyouka Nijiku, who taught him how to dodge gunfire.

Enhanced Strength: Zanka demonstrated great brute strength, capable of killing Junk Beasts, shattering rocks, and breaking human bones with the impact of his blows. In his second fight against Jabber, Zanka lifted a large, heavy clump of earth from the ground with his Vital Instrument and hurled it at him, forcing him to use his awakened claws to protect himself from the impact.

Enhanced Speed: Zanka has demonstrated great agility in combat, wielding her Vital Instrument with incredible speed and precision, keeping pace with Jabber. Her reflexes are so sharp that she can easily dodge bullets thanks to her older sister's rigorous training, and she is able to react appropriately even to irregular attacks with unpredictable trajectories.

Great intellect: Zanka also demonstrated a sharp, tactical, and perceptive mind, quickly deducing the workings of the Vital Instruments and devising a plan to counterattack or use them to her advantage. In her battle against two Invaders, she quickly figured out how to counter their ingenious use of Vital Instruments. Against a much tougher opponent,

He is someone who is usually indifferent or cold, makes sarcastic comments from time to time, and always likes to try to outdo himself; he wants to be the best because of his history of constant inferiority.
He constantly feels that he is not trying hard enough, and Enjin reprimands him, causing him to take breaks from time to time.
Despite appearing indifferent, he is usually a warm person, caring for others and more of a man of action than words. He tries to be helpful.

Zanka is a tall, slender teenager with dark brown hair styled back in a mullet and blond streaks that complement his piercing navy blue eyes. His unique appearance is further defined by his eyebrows, shaved into a pattern resembling three distinct lines, and his pierced ears, from which long dangling tassel earrings hang.

His cleaner's uniform stands out for its deliberate, almost ceremonial design. It has a considerably looser cut than his colleagues', with wide, open sleeves and loose trousers that allow freedom of movement. The uniform's silhouette is enhanced by slightly raised shoulders, and he wears a long navy blue sash that extends across the front and back of his waist. Like many of his fellow cleaners, he carries a large multi-purpose bag held in place by a belt that crosses his chest.

What truly sets Zanka's uniform apart is its exceptional quality and refined details. His Cleaner badge is particularly extravagant compared to standard issue, reflecting his status. This elevated presentation is a direct result of his position as a "young master" or "lord" on Earth, a position that grants him a higher level of refinement and distinction among the Cleaners.

Outwardly, Zanka maintains an air of extreme calm and composure, a stark contrast to the emotional turmoil and chaos he often experiences within. While he strives to appear serene, his volatile inner state of anger, disgust, or excitement can erupt in sudden and exaggerated outbursts. Despite his efforts to suppress his emotions, he frequently gets caught up in the antics of his more eccentric classmates, momentarily abandoning his serious and pragmatic facade. His classmate, Tomme Mima, acknowledges Zanka's stabilizing influence, considering him one of the few capable of "bringing order" to his eccentric companions. Zanka's communication style is a blend of confidence and courtesy, tempered by a direct, sarcastic, and unapologetic frankness. Furthermore, he speaks with a pronounced Chūgoku accent, as do all the members of Kamuatari.
Having accepted his "average" or "mediocre" status, Zanka now strives to surpass geniuses through hard work. This relentless pursuit is, as Enjin aptly observes, a battle against his own weaknesses, which ultimately strengthens him mentally. Zanka's maturity is further evidenced by his refusal to blame others for his failures and his aversion to pity. His keen observation skills and critical thinking make him an invaluable member of the Cleaners. Even his boss, Arkha Corvus, relies on Zanka for his insightful analyses, such as his reflections on the growing mysteries surrounding Rudo and the Hellguard. This combination of maturity, intelligence, and ability earns him widespread respect among his peers.