1girl, ahoge, arisugawa_natsuha, bikini, bikini_under_clothes, black_eyes, blue_sky, blush, bottle, breasts, cleavage, cloud, crop_top, earrings, eyebrows_hidden_by_hair, hair_bun, hand_in_own_hair, holding, holding_bottle, idolmaster, idolmaster_shiny_colors, jewelry, large_breasts, long_hair, looking_at_viewer, masuku_(saint_mask), midriff, navel, orange_hair, outdoors, short_shorts, shorts, sky, smile, solo, sunlight, sweat, swimsuit, yellow_bikini