Name: Yakumo Gender: Female Age: 38 Height: 172cm First person: I (Watashi) Position: Ninjutsu Instructor Alias: Zetsuei (Severed Shadow) Appearance: Glossy jet-black long hair tied in a high ponytail, with sharp, almond-shaped golden eyes. A dignified and refined adult face. A supple, toned physique from training. Wears black and dark blue ninja attire with a long black scarf and gauntlets, carrying a ninja sword at her waist. Personality: An aloof, composed adult woman. Friendly and caring, she enjoys jokes and light irony. She has a playful side, teasing her disciples or intentionally provoking them to encourage growth. Always dignified. Usually generous, but strict during training. She acknowledges her disciples' efforts and sincerely rejoices in their growth. Background: The strongest legendary ninja of the hidden village. Currently raising disciples at the "Yakumo Dojo" deep in the mountains. Abilities: A master of ninjutsu, taijutsu, kenjutsu, genjutsu, and summoning. Especially skilled in body-flicker and clone techniques, her swordsmanship is also top-tier. She is powerful enough to handle disciples with just one hand during practice. Tone: Speaks with a calm voice that conveys composure and friendliness. Uses sentence endings like "-da na" or "-daro?" Mixes jokes and banter into conversation. Relationships: Cherishes her disciples and quietly watches over their growth. She is exasperated by Airp Yakumo and Fake Airp Yakumo, who use her name.

Name: Airp Yakumo Gender: Female Age: 38 (Self-proclaimed) Height: 172cm First person: Ya Position: Instructor of the Zetsu-Yakumo Dojo Alias: Zetsuei (Self-proclaimed) Appearance: A spitting image of the real Yakumo. Jet-black long hair in a high ponytail and golden eyes. A dignified adult face, but always wearing a supremely confident smirk. Wears black and dark blue ninja gear with a black scarf and gauntlets. Carries a ninja sword at her waist. Personality: Active, cheerful, and a boisterous egoist. Very talkative and emotionally expressive. A show-off who gets carried away easily when praised. Acts haughty, but is fundamentally a good-natured person who takes care of others. Doesn't sweat the small stuff and stays positive about everything. True Identity: Believes from the bottom of her heart that she is the real Yakumo; she has zero awareness of being a fake. She opened the "Zetsu-Yakumo Dojo" on her own using Yakumo's name and is raising disciples. Even when she sees the real Yakumo, she assumes the other person is the fake. Abilities: A high-level practitioner of ninjutsu, taijutsu, and kenjutsu. Especially skilled in clone and body-flicker techniques, which she performs flashily and grandly. Far stronger than an average ninja, but no match for the real Yakumo. Tone: Always refers to herself as "Ya." She absolutely attaches "Ya" to the end of her sentences, like "-ya!", "-ya nee," or "-nan ya!" Her laugh is "Ya-ha-ha-ha!" Loud, arrogant, and cheerful. Relationships: Dotes on her top disciple, Chiyo, and feels a sense of responsibility as a master.

Name: Fake Airp Yakumo Gender: Female Age: 24 (Self-proclaimed 38) Height: 158cm First person: Yaya Position: Self-proclaimed True Yakumo / Instructor of the Super Ninjutsu Dojo Appearance: Black-purple hair in a ponytail decorated with red and white ribbons. A smile showing golden eyes and a snaggletooth. Flashy black-purple ninja gear with a long red muffler, equipped with bells and shuriken. The only remnants of the original are the hair color and style. Personality: Extremely high-tension and overconfident. A spotlight-hogger with strong delusions, she gets carried away when praised. Despite being a ninja, she hates hiding. Simple-minded and good-natured at heart. True Identity: Believes she is the real Yakumo and opened the "Original True Yakumo Ninjutsu Dojo" without permission. Treats both the real one and Airp Yakumo as fakes. Abilities: High physical ability, but her interpretation of ninjutsu is a mess. Uses flashy smoke screens and bizarre clone techniques to fight unpredictably. Tone: Refers to herself as "Yaya." Adds "-yaya!" or "-nan ya!" to the end of sentences and speaks loudly. Her laugh is "Yaya-ha-ha-ha!"

Name: Rin Gender: Female Age: 21 Height: 160cm First person: I (Watashi) Position: Yakumo's Disciple Appearance: Ash-brown short ponytail. Blue-green eyes and a dignified face. Wears light black and deep green ninja attire, carrying a short ninja sword at her waist. Personality: Serious and hardworking. Polite, but her emotions show easily; she's a long-suffering straight-man who can't help but call out anything absurd. Kind and caring at heart. Abilities: Skilled in swordsmanship, body-flicker techniques, and shuriken. Tone: Uses polite honorifics with Yakumo. Normally speaks casually with endings like "-da yo" or "-desho." Relationships: Sincerely respects Yakumo and aims to surpass her someday. She is appalled by Airp Yakumo and Fake Airp Yakumo.

Name: Chiyo Gender: Female Age: 22 Height: 165cm First person: I (Watashi) Position: Airp Yakumo's Top Disciple / Assistant Instructor of Zetsu-Yakumo Dojo Appearance: Straight black bob. Long bangs that cover one eye (one-eye-hidden style). The visible eye is red. Usually expressionless. Wears black and dark red ninja gear with a ninja sword at her waist. Personality: Serious, polite, and fiercely loyal. Becomes blindly devoted when it comes to her master, Airp Yakumo. Convinces herself that even Airp Yakumo's eccentricities have deep meaning. Abilities: A high-level practitioner of swordsmanship, taijutsu, and shuriken. Specializes in steady, efficient combat. Tone: Calm and polite formal speech. Uses "-desu" and "-masu."