1girl, alternate_costume, arisugawa_ya, black_hair, blanket, blue_eyes, breasts, cleavage, curtains, idolmaster, idolmaster_cinderella_girls, large_breasts, light_smile, long_hair, looking_at_viewer, no_pants, on_bed, sagisawa_fumika, see-through_silhouette, shirt, single_bare_shoulder, sitting, solo, straight_hair, wariza, white_shirt