onbawa, yuuka (blue archive), blue archive, absurdres, highres, 1girl, black halo, black skirt, blue necktie, bra visible through clothes, breasts, chair, full body, hair ornament, halo, holding, holding pen, large breasts, necktie, office chair, open mouth, pen, pleated skirt, purple hair, shirt, shirt tucked in, sitting, skirt, solo, swivel chair, triangle hair ornament, two side up, white background, white shirt