1girl, d, bare_shoulders, bikini, black_hair, blush, breasts, brown_eyes, collarbone, flower, groin, hair_flower, hair_ornament, idolmaster, ittokyu, long_hair, low_twintails, lying, medium_breasts, nakano_yuka, navel, on_back, pink_flower, signature, smile, solo, striped, striped_bikini, swimsuit, twintails, very_long_hair