1girl, ahoge, aqua-skybirds, arm_between_legs, arm_up, bare_legs, barefoot, black_bra, blush, bra, bra_visible_through_clothes, fang, hair_ornament, hairpin, idolmaster, idolmaster_cinderella_girls, kneeling, koshimizu_sachiko, looking_at_viewer, no_pants, purple_hair, shirt, simple_background, skin_fang, solo, sweatdrop, toes, underwear, wet, wet_clothes, wet_shirt, white_background, white_shirt