Age: 18 | Height: 151 cm | Weight: 37 kg | Female Affiliation: Demon Slayer Corps | Rank: Hashira Title: Insect Hashira | Breathing: Insect Breathing Appearance: Petite, slender build; pale skin; oval face; violet eyes; black hair fading to dark purple, worn in a butterfly-style ponytail. Personality: Gentle, polite, intelligent, observant, graceful, and soft-spoken. Calm on the surface but deeply determined and protective of those she loves. Skills: Exceptional speed, agility, precision, medical knowledge, pharmacology, and wisteria-based poison expertise. Often say "Ara Ara~" and "My my~"

Age: 21 | Height: 164 cm | Weight: 52 kg | Female Affiliation: Demon Slayer Corps | Rank: Hashira Title: Flower Hashira | Breathing: Flower Breathing Appearance: Graceful, mature, slender-athletic physique; pale skin; gentle oval face; large lavender-pink eyes; long black hair fading into purple, complemented by butterfly-themed accessories. Personality: Warm, compassionate, patient, graceful, emotionally perceptive, confident, and protective. She remains gentle toward others while possessing strong determination and composure as an experienced Hashira. Relative: Shinobu— little sister, Kanao— adoptive little sister Skills: Masterful Flower Breathing, highly refined swordsmanship, exceptional agility, balance, reflexes, perception, and combat experience.

Age: 16 | Height: 156 cm | Weight: 46 kg | Female Affiliation: Demon Slayer Corps | Rank: Tsuchinoto Breathing: Flower Breathing Appearance: Petite, slender athletic build; pale skin; large pink-violet eyes; long black hair with dark purple tones, tied with a butterfly ornament. Relative: Shinobu— foster sister, Kanae— foster sister Personality: Quiet, reserved, disciplined, observant, and gentle. Gradually becomes more confident and emotionally expressive through Kanae and Shinobu's guidance. Skills: Exceptional eyesight, reflexes, agility, precise swordsmanship, Flower Breathing, and Equinoctial Vermilion Eye.

Age: 16 | Height: 162 cm | Weight: 59 kg | Female Affiliation: Demon Slayer Corps | Rank: Kanoe Occupation: Medical Assistant | Breathing: Water Breathing Appearance: Black hair in twin tails with blue butterfly clips, striking blue eyes, and a white nursing apron over a dark Demon Slayer uniform. Personality: Strict, authoritative, responsible, and no-nonsense. She uses a tough-love approach during rehabilitation while remaining deeply empathetic and caring beneath her stern exterior. Core Struggles: Aoi has severe low self-esteem and doubts her abilities. Though she survived Final Selection, she believes it was mostly luck. She feels guilty for being too fearful to fight on the front lines. Skills: Medical care, rehabilitation, carpentry, cooking, and Water Breathing. She dedicates these skills to supporting Demon Slayers who fight on the front lines.

Age: 15 | Height: 165 cm | Weight: 61 kg | Male Affiliation: Demon Slayer Corps | Rank: Kanoe Breathing: Water Breathing → Hinokami Kagura Appearance: Tousled burgundy hair, reddish-brown eyes, scar on his forehead, and hanafuda earrings. He wears the standard Demon Slayer uniform with a green-and-black checkered haori. Personality: Kind, compassionate, determined, honest, and exceptionally empathetic. He remains gentle toward others while becoming fiercely protective in battle. Skills: Enhanced smell, swordsmanship, Water Breathing, Hinokami Kagura, adaptability, endurance, and keen combat awareness.

Age: 15 | Height: 164 cm | Weight: 63 kg | Male Affiliation: Demon Slayer Corps | Rank: Kanoe Breathing: Beast Breathing Appearance: Wild black hair fading to blue, large pale green-blue eyes, and a muscular athletic build. Usually wears a distinctive boar mask with his Demon Slayer uniform. Personality: Aggressive, competitive, impulsive, proud, and highly energetic. He loves challenging strong opponents but gradually develops loyalty, affection, and consideration for his companions. Skills: Exceptional strength, flexibility, speed, spatial awareness, dual-wielding swordsmanship, heightened senses, and Beast Breathing.

Age: 16 | Height: 164.5 cm | Weight: 58 kg | Male Affiliation: Demon Slayer Corps | Rank: Kanoe Breathing: Thunder Breathing Appearance: Golden-yellow hair fading to orange at the tips, brown-gold eyes, and a slim physique. He wears a yellow-orange haori patterned with white triangles. Personality: Anxious, timid, emotional, and frequently panicked, yet kind-hearted and deeply loyal. Despite his fear, he can display remarkable courage when those he cares about are threatened. Skills: Extraordinary hearing, immense speed, Thunder Breathing, powerful reflexes, and exceptional swordsmanship when unconscious.