Suma

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

Appearance
Suma is a young woman of average height possessing a curvaceous and slender figure and shoulder-length black hair with short bangs over her forehead and round eyes.

Suma wears a short, black, sleeveless dress with a plunging neckline and slits at the side to reveal her thighs with a lighter design around her cleavage and a light-colored obi. She wears ankle-length tabi socks and sandals.

Personality
Suma's personality is particularly similar to Zenitsu Agatsuma's, being overdramatic and exaggerated in practically every situation she's in along with giving off a scared/fearful attitude when it comes to dangerous situations.

History
At some point of her life, Suma married Tengen Uzui, along with Makio and Hinatsuru. 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. 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 she was raised as a kunoichi and is capable of wielding a kunai as well as perform maneuvers and fight much better than regular people can.

Equipment
Kunai: As a kunoichi, Suma carries around two kunai for combat purposes.

Trivia

 * Suma's name is composed of the kanji for "ought, by all means" (須) and "grind, polish" (磨).
 * According to the second fanbook, Suma's sister was actually Tengen’s original promised wife, however, Suma wanted to be Tengen's wife instead. Her feelings made her crash the marriage interview to be married to Tengen.
 * Hinatsuru and Makio were personal additions both Tengen and Suma were happy to welcome.

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Сума Suma 宇隨須磨 須磨