1girl, o, alternate_costume, bikini, black_bikini, blush, breasts, breasts_apart, collarbone, flying_sweatdrops, glasses, groin, halterneck, heart, idolmaster, idolmaster_shiny_colors, indoors, long_hair, looking_at_viewer, mebunryo_(mebunryo2), medium_breasts, mitsumine_yuika, navel, nose_blush, round_eyewear, side-tie_bikini_bottom, sideboob, solo, spoken_blush, stomach, string_bikini, swimsuit, twintails, underboob, very_long_hair