dobuzibu, kisaragi chihaya, shijou takane, idolmaster, idolmaster (classic), highres, 2girls, arms behind back, bdsm, behind another, bondage, bound, bound arms, breasts, closed eyes, closed mouth, collarbone, female pubic hair, fingernails, greyscale, hairband, holding another's hair, large breasts, long hair, monochrome, multiple girls, nipples, open mouth, pubic hair, rope, saliva, shibari, small breasts, standing, yuri