1girl, alternate_costume, ass, black_one-piece_swimsuit, breasts, brown_hair, competition_swimsuit, cowboy_shot, fireworks, from_behind, hair_ornament, hairclip, hibika, higuchi_madoka, idolmaster, idolmaster_shiny_colors, medium_breasts, mole, mole_under_eye, night, night_sky, one-piece_swimsuit, outdoors, pool, pool_ladder, purple_eyes, short_hair, sky, solo, standing, sweater, swept_bangs, swimsuit, wading, water