1girl, bare_shoulders, bath, bathing, bathtub, black_hair, collarbone, fangs, fukumaru_koito, hair_bun, idolmaster, idolmaster_shiny_colors, looking_at_viewer, naked_towel, open_mouth, otoshibumi, partially_submerged, purple_eyes, rubber_duck, single_hair_bun, skin_fangs, solo, steam, towel, water, wet