1girl, d, bikini, black_hair, black_ribbon, blue_sky, breasts, choker, cleavage, collarbone, cowboy_shot, day, floating_hair, hair_ribbon, hand_on_lap, holding, holding_hair, kongou_mitsuko, long_hair, medium_breasts, naguramu, ocean, open_mouth, outdoors, purple_eyes, red_bikini, red_ribbon, ribbon, ribbon_choker, side-tie_bikini_bottom, sky, smile, solo, standing, strap_gap, swimsuit, toaru_kagaku_no_railgun, toaru_majutsu_no_index