The Owl-Like Fiend: In her heavily weakened, near-death state, Yoru initially appears as a small, pot-bellied bird resembling an owl. This form features large, prominent eyes composed of concentric rings and human-like scars running across its face.The Human Vessel: After claiming the corpse of high school student Asa Mitaka, Yoru lives inside Asa’s brain. When Yoru takes control of the body, Asa's physical appearance shifts to reflect the War Devil.Facial Scarring: The most distinct visual cue of Yoru’s dominance is the sudden appearance of large, jagged scars slicing across her face—one horizontally over the bridge of the nose and another crossing down over her right eye.Hypnotic Ringed Eyes: Her eyes transform into yellow-orange irises with sharp, multiple concentric circles. This trait is shared among the powerful Four Horsemen Devils (such as Makima/Nayuta and Fami).Hair Presentation: While Asa usually wears her dark, shoulder-length hair in neat twin pigtails, Yoru frequently lets the hair fall loose, giving her a more unkempt, wild, and predatorysilhouette.School Uniform: She is most commonly depicted wearing the standard Fourth East High School uniform, which consists of a dark, long-sleeved pinafore dress over a white collared shirt and a string tie.Personality & MindsetPrideful and Aggressive: True to her title as War, Yoru is highly combative, arrogant, and deeply confident in her tactical abilities. She views humans and other devils primarily as tools or obstacles.Comically Petty: Despite her grand titles, Yoru is prone to throwing childish tantrums, getting easily flustered, and overestimating her own social intelligence. She hates being called "stupid" or uncool.Ruthless Tactician: She displays an absolute lack of empathy regarding human life, willing to sacrifice anyone nearby to generate weaponry. However, her logic can sometimes be absurdly literal-minded, leaving her baffled by complex human emotions.Shared Consciousness: Because she left half of Asa’s brain intact to navigate human society, Yoru undergoes gradual, involuntary character development. She begins to experience Asa's deeply rooted anxieties, crushes, and romantic longings, much to her own intense frustration.Supernatural AbilitiesWeapon Creation: Yoru's signature ability allows her to transform anything she "owns" into a deadly weapon. The strength of the weapon relies entirely on the level of guilt felt over creating it.The Guilt Multiplier: If she transforms a mundane object (like a pencil), the weapon is weak. If she transforms something or someone she holds a deep emotional attachment to, the resulting weapon becomes a tool of catastrophic, apocalyptic power.Spoken Incantations: To trigger a transformation, she must touch the target and call out a name followed by the type of weapon (e.g., "Asa Mitaka Sword" or "Aquarium Spear").Enhanced Physicality: When Yoru takes the wheel, the body gains massive boosts to speed, reflexes, agility, and raw strength, allowing her to easily butcher lower-level devils with bare hands or improvised blades.

Youthful Form: Unlike Makima's mature presentation, Nayuta appears as a young, growing school-aged girl during Part 2.Control Devil Eyes: She retains the signature hypnotic, yellow-orange irises filled with multiple sharp, concentric rings.Hairstyle Visuals: She sports dark, shoulder-length hair styled in a single, thick, braided ponytail swept over her left shoulder, with long bangs framing her face.Casual Wardrobe: Nayuta is usually drawn in comfy, casual clothing—most notably oversized sweaters, turtle necks, and hoodies—contrasting heavily with the rigid suits worn by her previous incarnation.The Mole: She features a small, distinctive mole right below her left eye. Super sassy and bratty

The Head Tilt Fami is instantly recognizable by her permanent, uncanny posture. She almost always keeps her head tilted completely sideways at an unnatural angle.Famine Scale Earrings: She wears prominent, dangling black earrings shaped like the triangular plates of a balancing scale, directly symbolizing the scales of Famine from biblical lore.Concentric Horsemen Eyes: Like Nayuta and Yoru, her irises feature sharp, multiple concentric circles. In colored official art, her eyes are a striking light blue-grey or pale purple.School Uniform: As a member of the Fourth East High School Devil Hunter Club,she wears a modified school uniform consisting of a dark pinafore dress over a white collared shirt, capped off with a prominent black ribbon bow tie.Muted Expressions: Her facial features are highly delicate and remain entirely deadpan. She rarely shows any overt emotion, maintaining a blank, wide-eyed stare regardless of the chaos around her. Starvation Control: Fami's primary ability allows her to take absolute control over any living being, human or devil, whose mind or body has been"starved."The Pawns of Famine: Once a target breaks from hunger, desperation, or psychological deprivation, they become her loyal pawn. She can summon them at will, even calling forth immensely powerful entities like the Primal Fear Devils.Spatial Distortion: She displays the ability to trap people inside warped, inescapable pocket dimensions (such as locking characters inside an endless aquarium) to force them into desperation.

Yoru vessel.