1girl, ahoge, black_bra, bra, breasts, cleavage, cowboy_shot, high-waist_skirt, kay_yu, large_breasts, looking_at_viewer, medium_hair, miniskirt, open_mouth, original, pink-haired_girl_(kay_yu), pink_hair, ponytail, see-through, see-through_shirt, skirt, smile, solo, underwear