1girl, o, bikini, blush, breasts, brown_hair, chet, cowboy_shot, halterneck, heart, heart_hands, higuchi_madoka, idolmaster, idolmaster_shiny_colors, looking_at_viewer, medium_breasts, navel, red_eyes, shadow, side-tie_bikini_bottom, solo, swimsuit, thighhighs, white_bikini