Yunyun is a main supporting character of the KonoSuba series and deuteragonist of the Kono Subarashii Sekai ni Bakuen wo! spin-off. She is a member of the Crimson Demons and daughter of the Village Chief, as well as former classmate and self-proclaimed rival to Megumin.
Yunyun is a young girl with crimson-colored eyes, a determined and timid look, and longish black hair (dark brown in anime) tied in two twin tails with red bows that lie on her shoulders. She is a little taller than Megumin, with more balanced proportions.
Yunyun usually wears a black hooded cape, similar in design to Megumin's. She wields a silver wand and wears a dagger on her hip. Underneath the cape, she wears a low-cut black blouse with a short pink necktie, and an ultra-short, pink miniskirt as well as a pair of dark toned pink stockings and brown boots. She wears a revealing outfit not because of personal preference, but because Dust tricked her into thinking it is a good way to make friends.
Although never shown visually, she has a barcode on her inner thigh.