Demon Slayer is an anime based on a manga written by Koyoharu Gotoge. It follows the story of a young boy becoming a demon slayer to kill the one who murdered his family and turned his sister into a demon.
Before Demon Slayer
- Unknown Man - Drowned to save his son.
- Unknown Doctor - Killed by Muzan Kibutsuji after his body rejected sunlight.
- Tamayo's Family - Killed by Tamayo.
- Uta - Killed by a Demon.
- Yoriichi Tsukiguni - Died due to old age.
- Most of the Demon Slayer Corps 400 years ago - Killed by Kokushibou under Muzan's orders.
- Acquaintance of Rui's Parents - Killed by Rui.
- Rui's Parents - Killed by Rui.
- Spider Family Members - Disintegrated by sunlight after failing Rui.
- Numerous Ubuyashiki Clan Members - Died due to Muzan's 'curse' affecting the family.
- Koyuki and Keizo - Poisoned by the Rival Dojo.
- All 67 members of the Rival Dojo - Killed by Hakuji (Akaza).
- Numerous Lower Ranked Demons - Killed by the would-be Hashiras.
- Shizu Shinazugawa - Decapitated by Sanemi.
- Tsutako Tomioka - Killed by a Demon.
- Ruka Rengoku - Died of illness.
- Kotoha Hashibira - Killed by Doma.
- 12 Urokodaki Students - Killed by the Hands Demon.
- Kanae Kocho - Killed by Doma.
- Makomo - Devoured by the Hands Demon.
- Sabito - Torn in half and eaten by the Hands Demon.
- Tanjuro Kamado (Tanjiro And Nezuko's Father) - Died of an unknown disease.
Demon Slayer: Kimetsu No Yaiba
Final Selection Arc
- Kie Kamado - Slaughtered by Muzan Kibutsuji.
- Takeo Kamado - Slaughtered by Kibutsuji.
- Hanako Kamado - Slaughtered by Kibutsuji.
- Shigeru Kamado - Slaughtered by Kibutsuji.
- Rokuta Kamado - Slaughtered by Kibutsuji.
- Temple Demon - Decapitated by Tanjiro with an axe, then turned to ashes because of sunlight.
- All but Five Final Selection Candidates - Killed by Demons during the exam.
- Hands Demon - Decapitated by Tanjiro with a sword.
First Mission Arc
- Satoko - Devoured by a Swamp Demon.
- Swamp Demon (One Horn) - Sliced to bits by Tanjiro's Water Breathing Sixth Form: Whirlpool.
- Swamp Demon (Three Horns) - Sliced to bits by Tanjiro's Water Breathing Sixth Form: Whirlpool.
- Swamp Demon (Two Horns) - Arms and head sliced off by Tanjiro.
- Unknown trio of drunk siblings - Killed by Muzan Kibutsuji.
- Yahaba - Head sliced off by Tanjiro Kamado.
- Susamaru - Body destroyed by Kibutsuji Muzan's cells inside her after saying his name, leaving only three hands and a puddle of blood that was disintegrated during sunrise.
Drum House Arc:
- Unnamed Person - Jumped off a window and died of his wounds.
- Horned Demon - Decapitated by Inosuke with his swords.
- Tongue Demon - Head sliced off by Zenitsu with his Thunder Breathing First Form: Thunderclap and Flash.
- Kyogai - Decapitated by Tanjiro.
Natagumo Mountain Arc
- Numerous Slayers - Killed by the Spider Family.
- Mother Spider Demon - Decapitated by Tanjiro.
- Older Brother Spider Demon - Decapitated by Zenitsu with his Thunder Breathing First Form: Thunderclap and Flash Sixfold.
- Father Spider Demon - Decapitated by Giyu Tomioka.
- Rui - Decapitated by Giyu Tomioka.
- Older Sister Spider Demon - Killed by Shinobu Kocho with poison in her sword.
Rehabilitation Training Arc:
- All the remaining five Lower Moons except Enmu - Killed by Muzan.
Kimetsu No Yaiba, the Movie: Mugen Train
- 2 Unnamed Demons hired by Enmu - Decapitated by Kyojuro.
- Enmu - Decapitated by Tanjiro Kamado.
- Kyojuro Rengoku - Punched through the stomach by Akaza, died shortly after sunrise due to his injuries.
Kimetsu No Yaiba: Season 2 onwards
- Daki and Gyutaro - Killed by Tengen Uzui and Tanjiro Kamado.
- Gyokko - Killed by Muichiro Tokito.
- Hantengu - Killed by Tanjiro Kamado.
- Jigoro Kuwajima - Commits Seppuku after Kaigaku is turned into a demon by Kokushibou.
- Kaigaku - Killed by Zenitsu Agatsuma.
- Akaza - Decapitated by Tanjiro Kamado and killed by using his own Blood Demon technique on himself on purpose.
- Doma - Poisoned by Shinobu Kocho after he ate her, later having his head cut off by Kanao Tsuyuri.
- Shinobu- Eaten and killed by Doma.
- Kokushibo - Killed by Genya Shinazugawa, Sanemi Shinazugawa, Gyomei Himejima and Muichiro Tokito, refusing to regenerate realizing his mistakes.
- Nakime - After Yushiro blocked her vision, Muzan killed her by crushing her head.
- Muichiro Tokito- Killed by Kokushibo in their battle.
- Genya Shinazugawa- Killed by Kokushibo in their battle.
- Tamayo- Killed by Muzan.
- Kagaya Ubuyashiki- Died because of his disease.
- Amane, Hinaki and Nichika Ubuyashiki - Died while staying with Kagaya as he activated his curse.
- Mitsuri Kanroji- Died while battling with Muzan.
- Obanai Iguro- Died while battling with Muzan.
- Gyomei Himejima- Died while battling with Muzan.
- Muzan- Killed by the sun.
- Serpent Demon- Killed by Shinjuro Rengoku.
- Flute Demon- Killed by Kyojuro Rengoku.