1girl, alternate_costume, animal_ears, arm_strap, bed_sheet, black_hair, black_leotard, black_pantyhose, blush, breasts, covered_navel, detached_collar, fake_animal_ears, idolmaster, idolmaster_shiny_colors, kazano_hiori, leotard, looking_at_viewer, lying, mole, mole_under_mouth, necktie, on_back, pantyhose, ponytail, rabbit_ears, seseri_aoba, short_necktie, small_breasts, solo, strapless, strapless_leotard, sweatdrop