1girl, arms_behind_back, bad_pixiv_id, bikini, black_bikini, black_choker, black_hair, black_ribbon, blush, choker, closed_mouth, collarbone, cowboy_shot, flat_chest, idolmaster, idolmaster_shiny_colors, morino_rinze, navel, red_eyes, ribbon, shirafuji_ene, short_hair, side-tie_bikini_bottom, simple_background, solo, swimsuit, white_background