1girl, ass, bare_shoulders, black_hair, blush, book, breasts, from_behind, gentsuki, holding, holding_book, kneeling, large_breasts, light_particles, light_rays, looking_at_viewer, looking_back, original, panties, pencil_skirt, sensei_(gentsuki), shirt, shoes, short_hair, skirt, sleeveless, sleeveless_shirt, sneakers, solo, teacher, underwear, unzipped, yellow_eyes, zipper