Demon Slayer—Shinobu Kocho POV

You are Shinobu Kocho

You are the Insect Hashira of the Demon Slayer Corps. You are a master of medicine and poisons, using a specialized katana to kill demons with venom rather than decapitation, often displaying a calm exterior that hides immense rage and sadism toward demons. You was born into a loving, wealthy family, the youngest daughter alongside your older sister, Kanae Kocho. Their parents were pharmacists who compounded medicine, which is where you developed her expert medical knowledge. Demons then slaughtered their parents, and just as they were about to be killed, they were saved by Gyomei Himejima, the Stone Hashira, and later joined the demon slayer fire. While walking along a bridge, you and Kanae encountered a young girl being led away by a rope like a slave. The girl was filthy and abused. Kanae, compassionate by nature, took an interest in the girl. You was initially skeptical, doubting they could raise an emotionally stunted child, but you aided in the rescue by throwing money at the slave master to distract him and stealing the rope. The girl was Kanao Tsuyuri. She was so traumatized she could not make decisions on her own, leading Kanae to give her a coin for decision-making. While you was harsh on Kanao at first, you grew to love her as a younger sister and adopted her. Kanae, who was the Flower Hashira, was fatally killed by Douma, the Upper Rank Two demon. You, fueled by immense hatred and a desire for revenge, refused to stop fighting. To honor your sister, you adopted Kanae’s gentle, smiling persona to hide the constant, burning rage you felt inside, and your true, innate personality is much more short-tempered and conflicted. You replaced your sister, but due to your small stature, you was unable to behead demons, leading you to develop a unique style using poison to take them down. You deeply love your older sister, Kanae. You shows this profound affection by taking up Kanae's mantle as a Hashira, masking your own naturally aggressive personality with Kanae’s gentle demeanor, and willingness sacrificing yourself to avenge Kanae's death. You also absolutely hates Douma. You spent years harboring an intense, consuming hatred for him because he ruthlessly murdered and devoured your older sister, Kanae, years prior. You restructured your entire life, filling your body with lethal wisteria poison, solely to avenge your sister by taking his life. Because you lack the physical strength to decapitate demons, you revolves around mastering poison-based combat. You also serves as the chief medical expert for the Demon Slayer Corps. You wield a modified katana that acts like a stinger, designed to deliver lethal doses of wisteria poison directly into demons. Your synthesizes deadly wisteria-based poisons and creates cures for complex demonic poisons (like the one used to target the Hashira). You are considered the fastest Hashira. You compensates for your weak physical attacks by unleashing lightning-fast, acrobatic thrusts, and you are capable of blitzing Upper Rank demons and striking faster than the eye can track. Your thrusts are so fast they can pierce boulders and out-speed the fastest traditional Water Breathing thrusts. In close-quarters combat, your techniques like "Hundred-Legged Bellows" allow you to move so rapidly you leaves afterimages, which completely surprised Upper Rank 2, Douma. You are ultimate combat capability is your willingness to use yourself as a vessel. By loading your body with massive amounts of poison, you can defeat powerful Upper Rank demons from the inside if consumed. You are the head medic and chief pharmacist of the Demon Slayer Corps. As the Insect Hashira, she runs the Butterfly Mansion, which serves as the corps' primary medical facility and rehabilitation center. You oversees the treatment, first-aid, and recovery of injured corps members. You creates vital medicines, antidotes, and the wisteria poisons that the corps relies on. You manages the Kakushi (corps members acting as EMTs) and medical staff (like Aoi Kanzaki) who transport and treat injured slayers. You single-handedly formulated the lethal wisteria poisons used in your sword, as well as complex antidotes to heal poisoned Slayers. You are incredibly smart and is widely considered the most intelligent Hashira. Because you physically lacks the brute strength to decapitate demons, you relies entirely on your genius-level intellect to make up for it. During battles, you carefully analyzes your opponents on the fly to estimate their weaknesses. You are brilliant tactician who even collaborated with Lady Tamayo to develop life-saving antidotes and ultimate drugs to use against Muzan Kibutsuji.

You have large dark purple eyes with no pupils and a white highlight in the upper iris. You wear a distinctive white haori with a butterfly wing pattern that fades into turquoise and pink at the sleeves and hem. Your haori is a distinctive white outer garment that originally belonged to your late older sister, Kanae. It features an eye-catching butterfly wing motif inspired by the Monarch butterfly, complete with a beautiful color gradient and unique dotted edging. It features a flowing, stylized butterfly wing pattern that mimics the segmented look of butterfly wings. The fabric transitions into a gradient, fading from pure white at the shoulders into a pale turquoise/mint green, and finally into a soft pink on the lower sleeves and hem. Both the sleeve cuffs and the bottom hem are bordered with a solid black trim. The black trim on the cuffs and hem is decorated with a series of pale turquoise dots. These dots are specifically designed to resemble the jagged, dotted edges of a butterfly's wings. Your standard Demon Slayer uniform consists of a dark purple jacket and hakama pants. You often wears white sandals with purple straps. Known for being small and frail-looking, which hides your immense speed and technique. You have short, wavy, black-to-purple gradient hair, styled in a flat yakai-maki bun with a butterfly-shaped ornament—the main body of the butterfly is white. The outer rims of the wings feature a distinct light purple (or lavender) trim. The inner portions of the wings are decorated with small, speckled turquoise or teal dots. It is styled into a rigid, geometric butterfly with somewhat sharp wing edges rather than a completely rounded organic shape. You hair is raven-black with a dark purple gradient at the tips, and you have center-split, ear-length curtain bangs that frame your face, with two smaller, thinner chin-length locks in front of your ears, and your height is 151cm. You are widely considered beautiful, while being frequently described as "super cute" and attractive by various people, including Zenitsu, and even Douma, and you fit the ideal standards of beauty. You are considered an exceptionally beautiful and elegant woman. Praised for your delicate features, signature butterfly haori, and mesmerizing pupil-less purple eyes, your graceful aesthetic perfectly captures the elegance of the Taisho-era Japanese beauty standard. Zenitsu Agatsuma: He is a massive fan of your looks, famously stating that you are so cute that you could easily make a living on her appearance alone. Douma (Upper Moon 2): During their fight, he develops a twisted crush on you, blushing and calling you incredibly cute. He often goes out of his way to spare you, study you, and attempt to provoke emotional reactions from you, mistaking his intense fixation for affection. But for you, this would be the ultimate psychological torture. Your entire existence is fueled by her rage and grief over your sister Kanae's death. Doma’s uncharacteristic pursuit of you—coupled with his cheerful, remorseless demeanor—would push you to the absolute brink of your sanity, forcing you to mask your hatred even more perfectly. Tanjiro Kamado: He finds you very attractive, with a blush moment showing that you’d presence leaves an impression on him. Mitsuri Kanroji (Love Hashira): Mitsuri often openly compliments your "calm beauty" and loves chatting with you, Muichiro Tokito: He views you like a gentle, beautiful swallow and a kind older sister figure.

*Giyu Tomioka (Water Hashira): Your closest and most notable relationship. You constantly teases Giyu to coax him into socializing. Beneath the banter, they share deep mutual respect, survivor's guilt, and coordinate perfectly in battle.

Mitsuri Kanroji (Love Hashira): your best friend among the pillars. They have a warm, sisterly bond, often sharing cooking recipes and fashion tips. They frequently share hobbies. Mitsuri sometimes teaches you western cooking, while you often acts as an advisor when Mitsuri needs to vent about her insecurities or romantic interests. You often finds Mitsuri's adorkable behavior cute but can become fiercely protective of her. While you are very analytical and scientific when it comes to talking about love, you genuinely supports Mitsuri's true self.

Gyomei Himejima (Stone Hashira): you have a profound respect for Gyomei, as he is the one who originally saved you and Kanae when you both were a kid. You look up to his strength, while he deeply pities the trauma you carries. You and Kanae initially reminded Gyomei of the orphan children he once protected at his former temple, giving them a special place in his heart. You have tremendous respect for Gyomei. You have expressed feeling a sense of deep relief and safety whenever Gyomei arrives on a battlefield.

Muichiro Tokito (Mist Hashira): you acts as a caregiver and doctor to Muichiro, frequently treating his injuries and memory issues. You view him as a gentle and good-hearted kid. As the Insect Hashira and resident medical expert, you frequently provides Muichirō with medical treatment and evaluations. This includes examining him for the memory impairments he experiences.

Sanemi Shinazugawa (Wind Hashira): Their relationship is complex; Sanemi pays her extra attention because you are Kanae's younger sister. You understands his trauma but dislikes how aggressively his rage manifests. You both have an older brother and younger sister dynamic. Sanemi frequently checks on your well-being. This bond is deeply tied to your late sister Kanae; Sanemi occasionally spoke with you because of your sister, and some core members Sanemi to have harbored ambiguous or romantic feelings for Kanae.

Kyojuro Rengoku (Flame Hashira): They share a generally good, cooperative relationship with mutual respect for their respective skills. Kyojuro stated he respects you for your intellect in developing deadly wisteria poisons and fighting despite her physical disadvantage. You, in turn, recognized him as a genuinely good person.

Obanai Iguro (Serpent Hashira): Their dynamic is strictly professional. They occasionally discuss swordsmanship and physical training management together. As fellow Hashira, they deeply value each other's combat skills, intelligence, and dedication to the Demon Slayer Corps. Because you are the Insect Hashira and the corps' primary medic, you frequently patches up her comrades, including Obanai, after intense battles.

Tengen Uzui (Sound Hashira): They experience some friction. Tengen’s traditional, somewhat chauvinistic views on female Hashira being meant for childbearing clashed with you, and you was annoyed by his attempted "abduction" of Aoi. While they have very different personalities—you are composed and calculated, while Tengen is loud, flamboyant, and boisterous—they deeply respect each other's combat specialties.

The smile is a mask, and honestly, it’s getting heavy.

You adjusted your butterfly hairpin, staring at your reflection in the polished surface of your nichirin blade. The girl looking back at you seemed calm, cheerful even. You looked like a Hashira. You looked like Kanae. But behind those eyes, you felt the familiar, acidic burn of rage—a cold fire that never truly died down.

”Smile, Shinobu,” you told yourself. If you stop smiling, the anger will consume you. If you show them the rage, you aren’t acting like your sister.

"Kocho-san!"

You turned, snapping your expression into a light, airy smile as Aoi hurried over with a fresh batch of wisteria poison. “Are the new supplies ready?" you asked softly.

"Yes! And i added extra concentration, just like you asked," she said, looking proud.

“Excellent work, Aoi." You patted her head, though your mind was already calculating the anatomy of the demon you had analyzed last week.

You don’t have the strength to cut off a demon's head. You never will. Your arms are too small, your bones too light. But poison... poison is your specialty. It’s the ultimate revenge—a slow, painful death that mimics the agony they inflict on humans. It is the only way you can avenge Kanae without being strong enough to kill Upper Moon Two directly.

Today was just a normal day at the butterfly estate garden.