| He was killed by Muzan Kibutsuji | Butterfly Estate Aoi Kanzaki 神崎 アオイ, Kanzaki Aoi Voiced by: Yuri Ehara Japanese ; English One of Shinobu's students |
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| With multiple eyes and that scary face, this guy has a body of a human | The protagonist of Mugen Train Arc and one of the most popular characters in the series, Rengoku is the Flame Hashira from Demon Corps |
Right from a young age, Rengoku always believe that the strong should always protect the weak from any type of harm! Due to all these awesome abilities, Enmu makes it to the list of Strongest Demon Slayer Characters of all time.
| He is always willing to give his all while fighting the opponents, and most of the time, it never goes wrong with his level of skills | She was once a struggling musician who developed a disturbing habit of murdering prior to a performance as she associated her killings with applause |
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| Upper Moons The high-ranking members of the Twelve Moons | Sumi Nakahara 中原 すみ, Nakahara Sumi , Naho Takada 高田 なほ, Takada Naho and Kiyo Terauchi 寺内 きよ, Terauchi Kiyo Voiced by: Ayumi Mano, and Nanami Yamashita Japanese ; Michelle Marie, Kimberly Woods and Jackie Lastra English Three little girls who work as servants in the Butterfly Estate |
He is a human of a rare constitution called 'marechi', which according to demons, is far more nutritious than an average person, as it is implied that consuming one marechi is the same as consuming one hundred humans simultaneously.
18| After Rui's death, Muzan decides to eliminate the Lower Moons and have only the Upper Moons under his command | She is attempting to find a cure for demons, but requires the blood of special demons |
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| She assumes the role of "Daughter" and can create acidic prisons of thread that dissolve her enemies and convert them into her food | He then becomes a member of the Demon Slayer Corps, learning the Thunder Breathing from Jigoro along with Zenitsu, before betraying the Slayer Corps and allowing himself to be transformed into a demon by Kokushibo, which leads Jigoro to commit seppuku in atonement |
Rui has a Lower Rank 5 position, and when it comes to his actual strength, he is one of the strongest Demon Slayer characters of all time! He also killed Shinobu's older sister Kanae.
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