1girl, arched_back, bikini, blue_bikini, blue_eyes, blue_skirt, blue_sky, bracelet, brown_hair, cowboy_shot, eyewear_on_head, flat_chest, front-tie_bikini_top, front-tie_top, idolmaster, idolmaster_million_live!, jewelry, kotori_ryou, medium_hair, miniskirt, navel, skirt, sky, solo, sunglasses, suou_momoko, swimsuit, v-shaped_eyebrows