Makomo (真ま菰こも Makomo?) was a former apprentice of Sakonji Urokodaki.
Makomo was a young girl of a short stature with pale skin, who possessed gentle eyes of a deep cyan color, their pupils rectangular and white, that were a notably paler turquoise near the bottom. She had black hair that came down to her shoulders, spiking outwards at the ends, and short micro bangs over her forehead.
Makomo wore a red yukata with a pink and white flower dot pattern, over which she sported a dark-purple sleeveless haori and a paler brown piece of fabric tied around her waist. On her feet, she wore a pair of sandals of a similar design to the ones worn by Mitsuri Kanroji, tied around her ankle from her heel and closed at the toe. As with the rest of Sakonji Urokodaki's apprentices, Makomo's white warding mask, hand-carved by her master himself, took the shape of a fox's face, hers additionally being decorated by two blue flowers painted on its left-hand side.
Hotaru Haganezuka (鋼鐵はがね塚づか 蛍ほたる Haganezuka Hotaru?) is a swordsmith affiliated with the Demon Slayer Corps.
Hotaru wears a sunflower-patterned robe and a large, woven hat with hanging floral wind chimes. His head is wrapped in a spotted cloth and his face is concealed by a Hyottoko mask (wooden festival mask), similar to Sakonji Urokodaki.
During the Swordsmith Village Arc, he is seen with a more muscular build compared to his initial appearance.
Unmasked, Hotaru is revealed to have long, black hair coupled with sharp eyes and distinctly-shaped thick eyebrows. However upon being attacked by Upper Rank 5, Gyokko, Hotaru now possesses several deep scars and cuts from the Demon all over his body, including an X-shaped one on his face, and has now lost the use of his right eye.