1girl, 2020, barefoot, blue_one-piece_swimsuit, dated, feet, foreshortening, fukumaru_koito, full_body, goggles, goggles_around_neck, idolmaster, idolmaster_shiny_colors, karya, long_hair, on_floor, one-piece_swimsuit, open_mouth, ponytail, pool, purple_hair, red_eyes, sitting, soles, solo, stretching, swimsuit, toes, white_background