Nichika Ubuyashiki (
Appearance[]
Like the rest of her family, Nichika had large eyes with pale skin. She wore her short, white hair in a blunt bob with a fringe.
Nichika wore a dark blue Hōmongi kimono with purple flowers as its pattern and a maroon obi with a cream yellow obiage and juban under everything. On the left side of her hair, she donned a yellow ribbon.
Personality[]
Not much was known about her personality, but she does show a sense of loyalty for dying along with her twin sister when their father sacrificed himself to defeat Muzan. Kiriya describes his sister as more skilled than him. Nichika also showed concern over Muichiro's well-being when he began train intensely despite having barely recovered from his injuries. However, Amane prevented her from interfering with Muichiro's training.
During her final moments, she showed no fear towards Muzan Kibutsuji intruding upon their home; she simply played and sung with her sister, accepting their demise.
History[]
Born to Kagaya and Amane Ubuyashiki, Nichika was the second eldest of the couple's quintuplets.[2]As such, she and the oldest of the five, Hinaki, often served as assistants to their parents together, following their orders and being highly committed to their duties.

Amane stops Nichika from intervening in Muichiro's training.
During one occasion, Nichika and Hinaki accompanied her mother when they went to meet with a young boy thought to be a descendant of powerful past Demon Slayers. The boy, Muichiro Tokito, had just endured a demon attack that left his twin brother dead and himself on the verge of death as well. After being patched up, Muichiro began training despite his wounded state. Nichika grew concerned for him but her mother stopped her from interfering with his training.
Synopsis[]
Mount Natagumo Arc[]
Nichika stands next to Kagaya and Hinaki as her father instructed the Hashira Giyu Tomioka and Shinobu Kocho to head for Mount Natagumo, having received news that there were multiple casualties reported.
Rehabilitation Training Arc[]

Nichika during the Hashira meeting and trial of Tanjiro Kamado.
Nichika assists the blind Kagaya as he attends the Hashira meeting with her sister. When Kagaya explained his decision to pardon the Kamado siblings, Wind Hashira Sanemi Shinazugawa tried to prove the danger Nezuko Kamado posed by forcing her to smell his Marechi blood and attack him. Nezuko resisted his taunts; unable to see, Kagaya asks for what had happened and Nichika explained that Sanemi had failed to prove Nezuko was a danger in the Corps. This further proved Kagaya was right and Sanemi was unable to defend himself and obeyed his orders. However, when Tanjiro impulsively and boldly vowed to kill Muzan Kibutsuji, Nichika in rare show of emotion was dumbfounded and stared at Tanjiro.[3]
Entertainment District Arc[]
Shortly after the battle in Yoshiwara ended with the deaths of Upper Rank demons Gyutaro and Daki, Nichika's father Kagaya became ecstatic at the news. However, his celebration of the new turn of events was short-lived as his health began to deteriorate quickly, coughing blood as Amane rushed for her children to fetch his medication. Nichika was summoned to help Kagaya, worriedly calling to his father as he watched him coughing more and more.[4]
Swordsmith Village Arc[]
During his battle against the Upper Rank Five, Gyokko, Muichiro Tokito recalled how he was found near death by Amane and her daughters Hinaki and Nichika.[5]
Hashira Training Arc[]

Hinaki and Nichika playing with a kamifusen.
During Muzan Kibutsuji's confrontation of the Demon Slayer Corps, Nichika and Hinaki served as decoys to lull the demon into a false sense of security. Playing with a kamifusen and singing to each other, they acted blissfully unaware of his presence, which, along with Muzan seeing that none of the Hashira were to be seen, caused him to think that no one but the Ubuyashiki family was present. The plan worked as Muzan remained unaware and was caught off-guard when Kagaya set off an explosive trap beneath the mansion, sacrificing himself and his family to stun Muzan for an attack by the coming Hashira.
Legacy[]
Nichika would be mourned by her youngest sister Kanata, who began to cry at the family she lost before being scolded by Kiriya to not stop mapping the Infinity Castle. Later on, when Muzan was on the brink of death and desperately trying to escape being burned by sunlight, her surviving sister prayed for her family's help.
Abilities[]
Nichika is a regular human, despite being one of Kagaya's eldest daughters. She possesses keen instincts but lacks any extraordinary abilities, unlike her other quintuplet siblings.
Trivia[]
- In Kimetsu Academy, Nichika is described as 'graceful', indicating that she was the most ladylike of the Ubuyashiki quintuplets.
- Nichika shares her English voice actress, Brianna Knickerbocker, with Kanao Tsuyuri.
Relatives[]
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| Kagaya |
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| Senri |
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Hinaki |
| Nichika |
| Kiriya |
| Spouse |
| Kuina |
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References[]
- ↑ Kimetsu no Yaiba Manga: Chapter 144 (Page 6).
- ↑ 2.0 2.1 Kimetsu no Yaiba Second Fanbook.
- ↑ Kimetsu no Yaiba Manga: Chapter 47 (Page 15).
- ↑ Kimetsu no Yaiba Anime: Episode 44.
- ↑ Kimetsu no Yaiba Anime: Episode 53.