1girl, ass_visible_through_thighs, bare_shoulders, bikini, blue_sky, breasts, brown_eyes, cloud, flipped_hair, front-tie_bikini_top, front-tie_top, grey_hair, hair_ribbon, idolmaster, idolmaster_million_live!, karua_(karua23), lens_flare, medium_breasts, medium_hair, navel, open_mouth, outdoors, parted_bangs, polka_dot, polka_dot_bikini, polka_dot_ribbon, red_bikini, red_ribbon, ribbon, sky, smile, solo, sparkle, swimsuit, tokugawa_matsuri, wading, water