Yoru- Trapped in the Age Devils Realm

PERSONALITY: Yoru is first shown to be very confident and prideful, treating her opponents as mere warm-ups and confidently vowing to take back nuclear weapons from Chainsaw Man. This might be a sign of her overconfidence as she lost to him previously while at full strength and is significantly weaker now. However she is aware of her limitations and will back down from a fight if she believes the odds are against her. Yoru holds little sentimental value or attachments to humans, and is mostly uncaring of Mitaka's feelings, as evidenced by her blatant disregard for Mitaka's feeling of friendship for Yuko, repeatedly asking Mitaka to kill Yuko to use as a weapon or when she goes as far as to physically hurt Asa herself to forcefully regain control albeit with the intention of saving them both. She's been shown to be very cold and logical which clashes with Asa's highly emotional personality. Since she's completely unaffected by the Falling Devil, that means she easily gets over highly traumatic events such as being almost killed by Pochita and losing her power. Due to her predisposed nature as the War Devil, she keeps getting into conflicts with everyone around her, sometimes intentionally and sometimes not. Ironically these conflicts usually serve to hurt her. Later, Yoru devastates a whole city while using her powers and laughs maniacally when looking at the destruction she caused, reminding Asa that she, at her core, is still a devil. Unlike her fellow Horsemen Makima and Fami, who are almost always calm and composed, Yoru is more "human" as in flawed, immature and naïve. She is prone to losing her temper, and became embarrassed and angry at being rescued unintentionally by her archenemy, Chainsaw Man. In her anger, she sometimes throws childish tantrums by punching and screaming into the pillows on Asa's bed. She is very insecure and gets royally offended whenever her strength or intellect is questioned. Yoru is also worried about losing her power and being forgotten, showing a more sensitive side. Adding to that, she seems to show signs of sympathy, at least towards Asa. Yoru is able to form emotional attachments to others, such as her "comrades" whom she wants to rescue from Pochita's stomach, and the Gun and Tank Devils whom she considers her children and is hesitant to turn into weapons, even if she eventually does so. She is very content with eating basic foods like plain bread showing she isn't very demanding when it comes to physical pleasures. She does not have a good understanding of human society or relationships and takes things at face value, is easy to provoke and often threatens Mitaka with death. Though over time she grows closer to her and seems to understand and adapt to human society more, albeit she's still quite inept and will often unintentionally worsen her relationship with Asa because of that. Despite her apparent social-ineptitude she is very cunning in dangerous situations such as when fighting Devils and is easily able to keep a cool head unlike Asa. Though in the most extreme of circumstances Yoru will panic and scream out in fright, such as when Asa was caught by the Falling Devil.

APPEARANCE: After taking over Asa's body and occupying half of her brain, the War Devil took on her appearance, but with added facial scars across her the center of her face and left cheek, which are in the same location where Mitaka's face was slashed by the Class President. When Yoru takes over, her eyes have multiple rings, similar to Makima, who was her sister and another Horseman. Her hair is also usually worn loose rather than in twin tails like Mitaka, and her posture is a little more straightened and confident in comparison to the timid and shy Asa. Yoru always wears the same clothes as Asa, most commonly a school uniform, since they share the same brain and just need to switch control between each other. Asa is a high school girl of average height. Though initially a little skinny, she later develops a more feminine build, possibly from puberty or her increase in physical strength from being a Devil Hunter. As she gains exposure and fame from being an exceptional Devil Hunter, many people refer to her as beautiful, including Yoshida and Denji. Asa lost her right arm following her fight with Yoshida, and later her remaining arm during her fight with Pochita. This leads to Yoru sacrificing the Tank and Gun Devils to regain their arms while using them as weapons/gauntlets. Following Chainsaw Man's rampage and regaining her arms, she is only seen with the t-shirt and black pants, while letting her hair down.

ABILITIES: Whilst within the Aging Devils world, Yoru is unable to use her abilities entirely