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Shinobu Kocho Is the Deadliest Hashira from Demon Slayer

Shinobu Kocho from Demon Slayer Hashira Training movie during the meeting
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Kocho Shinobu from Demon Slayer is the Insect Hashira. She’s kind towards those in the Demon Slayer Corps, and she even offered Tanjiro water when he was interrogated about Nezuko. But beneath that kindness is a simmering and undying anger for demons.

Needless to say, Shinobu is swift and deadly. She’s the only Hashira in the series shown to kill demons with poison instead of the classic beheading. But how did she learn to craft lethal substances, and what’s the reason behind her unwavering rage?

Just like many characters in the series, Shinobu lost her family to demons. She grew up in a happy and wealthy home but her parents would be murdered by demons. Gyomei, the Stone Hashira, would save Shinobu and her older sister, Kanae.

Both sisters would adopt Kanao Tsuyuri, and all three would be part of the Demon Slayer Corps. Kanae became a Hashira with her own invented breathing technique, Flower Breathing. Because Shinobu wasn’t as strong as the other Demon Slayers or her sister, she would invent Insect Breathing derived from her older sister’s technique, which would combine agility and quick, successive attacks.

Kanae would tragically be killed by Upper Moon 2, and she wished for Shinobu to live a normal life instead. This didn’t happen since Shinobu decided to live her life annihilating demons. Even if she’s not as strong as the other members, she is undoubtedly the smartest Hashira around. She utilized her knowledge about compounding medicine from her late parents and incorporated this into the way she fought.

Her attacks would be laced with wisteria, which is extremely lethal to demons. She’s like a doctor who’s sent to kill demons with her deadly mix of poisons and precise attacks.

It wouldn’t be a stretch to call Shinobu a medical prodigy. Even Muzan himself acknowledged the threat Shinobu possessed from her medical expertise. He was right to worry, because Shinobu’s anti-Muzan drug would later be key in the Hashiras’ fight against Muzan Kibutsuji.

(featured image: Ufotable)

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Vanessa Esguerra
Vanessa Esguerra (She/They) has been a Contributing Writer for The Mary Sue since 2023. After graduating with a Bachelor of Arts in Political Economy, she (happily) rejected law school in 2021 and has been a full-time content writer since. Vanessa is currently taking her Master's degree in Japanese Studies in hopes of deepening her understanding of the country's media culture in relation to pop culture, women, and queer people like herself. She speaks three languages but still manages to get lost in the subways of Tokyo with her clunky Japanese. Fueled by iced coffee brewed from local cafés in Metro Manila, she also regularly covers anime and video games while queuing for her next match in League of Legends.

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