1boy, 3girls, aphrodisiac, bad_pixiv_id, black_pantyhose, black_serafuku, blush, coffee, double_v, hamedoragon, high-waist_pantyhose, ichinose_shiki, idolmaster, idolmaster_cinderella_girls, kurosaki_chitose, looking_at_another, lying, multiple_girls, navel, neckerchief, on_back, open_clothes, open_shirt, panties, panties_under_pantyhose, pantyhose, producer_(idolmaster), red_neckerchief, school_uniform, serafuku, shirayuki_chiyo, simple_background, underwear, v, white_background, white_panties