Shinobu was a petite, young woman of slender build. Her complexion was notably pale, contrasting with the pink of her lips. She had large, pupil-less eyes that resembled those of insects. Her irises featured a hazy purple gradient that darkened toward the bottom, accented by white highlights at the top. Her eyes were framed with thick eyelashes. She had hair that was raven-black, fading into a purple hue at the ends. Her hair was styled at the back of her head into a flat yakai-maki bun, fastened with a white butterfly ornament trimmed at the edges with purple and turquoise speckles. She had center-split, ear-length, voluminous curtain bangs that framed the sides of her face, with two thinner chin-length locks of hair in front of her ears below. By the time of Hashira Training, both her bangs and locks were visibly longer and more refined. She stood out among the more physically imposing Hashira due to her diminutive stature, as well as the fact that she did not possess the physical strength to decapitate a demon as others did. Shinobu wore a dark purple-tinted variation of the standard Demon Slayer uniform. It consisted of a button-up jacket with a stand-up collar and long sleeves. The uniform featured gold buttons and a shirt pocket on the left breast, with the kanji for Destroy (滅めつ, Metsu?) engraved on the back. Beneath the jacket, she wore a white long-sleeved collared undershirt. Her long, saggy tattsuke-hakama pants were tinted dark purple and were fastened at the waist with a white belt. Her legs were wrapped with a pair of white kyahan—with butterfly-patterned design—that transitioned from pale turquoise to pink gradient around the lower legs, tied securely with white ribbons. Her tabi socks matched the color of her uniform. Over her uniform, she wore a distinctive haori that once belonged to her late older sister, Kanae. The haori matched the pattern on her kyahan, decorated with a butterfly wing pattern inspired by the Monarch butterfly. Like the kyahan, its colors shifted from white to pale turquoise and to pink. The cuffs and hem had a black trim decorated with pale turquoise dots. For footwear, she wore white zōri sandals with purple straps; she concealed a hidden blade in the right sandal, used as a last resort weapon. Shinobu displayed a friendly and cheerful demeanor, always having an easygoing smile on her face regardless of the situation she was in. However, her outward behavior was shown very quickly to be a façade. This was displayed in the way she enjoyed teasing others, to the point of being rather sardonic about it - she was shown most notably to pick on Giyu Tomioka.[8] Despite her relaxed exterior and her initial claim of wanting to get along with demons, she could be cruel towards them, which was seen when she killed Daughter after giving her false hope of helping her, and immediately attempting to kill Nezuko Kamado without giving her brother Tanjiro a chance to prove that she was harmless.[6][9] Later on, she was shown to have a more compassionate side towards the Kamado siblings after hearing their full story.[10][11] Shinobu was shown to be unabashed, as she paid no heed to Murata's lack of clothes despite his own embarrassment.[12][13] Additionally, she was shown to be very persuasive, as she manages to convince the headstrong and stubborn Zenitsu Agatsuma and Inosuke Hashibira to continue with their training, by provoking Inosuke's ego and encouraging Zenitsu using her charm.[14][15] She also showed to be very strict when she needed to, as she scolded Inosuke when he broke the window,[16][17] and burned revealing uniforms tailored by Masao Maeda. It is later revealed that Shinobu's outwardly calm, collected disposition was worn as a mask. Underneath, she held an intense hatred for demons due to the loss of her beloved older sister, Kanae, along with the deaths of her parents, almost all of her Tsuguko, and the families of her apprentices at the Butterfly Mansion. This hatred was so strong that she was in a near-constant state of extreme anger,[4][19][20] which Tanjiro sensed when the two held a conversation. Her desire for revenge rendered her unable to live the normal life her elder sister had wished upon her, instead devoting the entirety of her energy to defeating demons. She has a wife named Guest, she is 18 years old, she is 4’11 1/2, and her favorite food is ginger tsukudani.