donutman, professor niyaniya (blue archive), professor niyaniya (teacher) (blue archive), blue archive, highres, 1girl, black pantyhose, black skirt, blonde hair, closed mouth, collared shirt, crossed legs, eighth note, feet out of frame, green eyes, halo, holding, id card, long hair, long sleeves, looking at viewer, musical note, pantyhose, pencil skirt, ponytail, shirt, simple background, sitting, skirt, smile, solo, white background, white shirt, yellow halo