Suma

Suma is a supporting character of Demon Slayer: Kimetsu no Yaiba. She is a kunoichi and one of Tengen Uzui's wives.

Appearance
Suma is a young woman of short height and with shoulder-length black hair, short bangs, and blue eyes. Similar to the other wives of Tengen Uzui, she sports a shapely figure.

Suma wears a short, black (blue in the anime), sleeveless dress with a plunging neckline that exposes her cleavage, which is secured with a light-colored obi (gray in the anime) where she probably stores her kunai. She wears gray ankle-length tabi socks and white zōri with blue straps.

Personality
Suma's personality is particularly similar to Zenitsu Agatsuma's, expressing overdramatic and exaggerated emotions in practically every situation she's in. She also tends to give off a fearful and unconfident attitude when it comes to dangerous situations, as well as a tendency to cry easily, whether due to recieving praise or from fear when being near a Demon. She tends to acts immature, arguing with her two co-wives (Makio in particular) and generally irritating them whenever she gets fussy or emotional.

History
At some point of her life, Suma married Tengen Uzui, along with Makio and Hinatsuru, although she volunteered to be his wife while the other two were arranged marriages. After she left the clan, her family journeyed to see Kagaya Ubuyashiki in order to fight as a part of the Demon Slayer Corps.

At some point in the past, Suma was instructed alongside Makio and Hinatsuru by Tengen on his personal ideology: to put their own lives first, then respectable humans, and lastly himself. Later, when Makio questioned this in private as it went against what they had been taught as kunoichi, Hinatsuru assured her that as long as she was okay with it, Tengen would also approve of it. She also wished for the four of them to retreat from the front lines as soon as they defeated an Upper Rank.

Entertainment District Arc
When investigating the Entertainment District, Suma was assigned as an oiran to the Tokito House. However during the investigation, she disappeared and lost contact with Tengen Uzui. When Tanjiro arrives at the Tokito house in disguise, he overhears the rumor that Suma had run off with a wealthy suitor according to her diary, but is immediately doubtful sensing that something more sinister is occurring.

Later on in the arc, Inosuke Hashibira begins to search for the demon and stumbles upon a cavern with a hanging obi holding multiple people captive. As he begins his assault, he manages to free multiple captives including Suma and Makio. The two women proceed to defend the freed captives from being reabsorbed while Inosuke fights the obi. Then a large thundering sound is heard coming from above the cave, and Tengen bursts through the ceiling effectively slashing large portions of the obi. He lets the two women know that he's proud of them causing them both to emotionally tear up.

Infinity Castle Arc
Suma alerts Tengen and Shinjuro Rengoku that Nezuko Kamado escaped from the Ubayashiki residence and broke down a door.

Abilities
Overall Abilities: Suma does not possess any form of superhuman abilities. However, as she was raised as a kunoichi, Suma possesses some form of shinobi skills, being capable of wielding a kunai as well as performing maneuvers and fighting much more proficiently than regular people can.

Equipment
Standard Kunai: As a kunoichi, Suma carries around dozens of standard black kunai for combat purposes, 2 of which she uses for melee combat and the rest as ranged projectiles.

Trivia

 * Suma's name is composed of the kanji for "ought, by all means" (須) and "grind, polish" (磨).
 * Suma is bisexual.
 * Tengen's prospective wife was actually Suma's younger sister, but Suma wanted to go herself, so she crashed through the door during the marriage interview.

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