1girl, bow, brown_eyes, flat_chest, from_side, grey_hair, grin, hair_bow, hair_ornament, hairclip, idolmaster, idolmaster_cinderella_girls, jewelry, koshimizu_sachiko, looking_at_viewer, looking_to_the_side, meme, necklace, pink_bow, pointing, pointing_at_viewer, simple_background, sincos, smile, solo, white_background