Suma is a supporting charater of Demon Slayer: Kimetsu no Yaiba. She is a kunoichi and one of Tengen Uzui's wives. Suma's personality is particularly similar to Zenitsu Agatsuma's, expressing overdramatic and exaggerated emotions in practically every situation she's in along with giving off a fearful and unconfident attitude when it comes to dangerous situations, as well as a tendency to cry which is seen when she bursts into tears whenever the Obi Demon launches its attacks in fury, or when after Tengen Uzui praised her, clutching on the latter's uniform while she cries. 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.