1girl, ahoge, aqua_hair, asakura_toru, atto_silia, bikini, blue_sky, breasts, day, eyewear_on_head, gradient_hair, idolmaster, idolmaster_shiny_colors, jewelry, looking_at_viewer, multicolored_hair, navel, necklace, ocean, outdoors, parted_bangs, print_bikini, purple_hair, short_hair, sky, solo, sunglasses, swimsuit, two-tone_hair, wet