1girl, akagi_miria, bad_pixiv_id, bare_legs, beniyuki_pangya, black_hair, breasts, collarbone, flower, futon, hair_flower, hair_ornament, idolmaster, idolmaster_cinderella_girls, indoors, loli, looking_at_viewer, looking_to_the_side, looking_up, lying, meme, on_back, short_hair, small_breasts, solo, tatami, they_had_lots_of_sex_afterwards_(meme), thighs, twintails