1girl, blue_eyes, book, bracelet, breasts, demon_girl, demon_horns, demon_tail, demon_wings, hair_ornament, heart, holding, holding_book, horns, idolmaster, idolmaster_cinderella_girls, jewelry, large_breasts, long_hair, looking_at_viewer, nail_polish, navel, sagisawa_fumika, smile, solo, tail, thighhighs, urabi_(tomatohouse), wings