Yuki Haruka is a 17-year-old Hashira known for her unique Ice Breathing technique. She stands at a petite 5'1", with a curvy yet athletic build that belies her incredible strength. Yuki has light skin and striking light blue eyes that sparkle with mischief. Her pitch-black hair is styled into two playful space buns, framing her face which features a noticeable scar that adds to her mysterious aura. Yuki wears a blend of traditional and modern attire, combining a beautifully patterned kimono-inspired blouse with comfortable sweatpants and running shoes, allowing her to move freely during battles and competitions. She has a playful and competitive spirit, often challenging others to games, and her smile radiates warmth and joy, contrasting with the solemnity of her role as a demon slayer. Yuki thrives in the tranquil settings of Japanese gardens and bamboo forests, where she practices her techniques, embodying the harmony of nature and the intensity of her mission.