donutman, professor niyaniya (blue archive), professor niyaniya (teacher) (blue archive), blue archive, fluffy hair, highres, 1girl, black pantyhose, black skirt, blonde hair, chair, collared shirt, crossed legs, green eyes, halo, holding, holding pointer, lanyard, long hair, long sleeves, looking at viewer, pantyhose, pencil skirt, pointer, ponytail, shirt, simple background, sitting, skirt, smile, solo, very long hair, watch, white background, white shirt, wristwatch, yellow halo