1girl, aa211108, bare_legs, barefoot, bikini, black_hair, blush, breasts, frilled_bikini, frills, idolmaster, idolmaster_shiny_colors, kazano_hiori, knees_up, looking_at_viewer, lying, mole, mole_under_mouth, navel, on_back, ponytail, side-tie_bikini_bottom, simple_background, small_breasts, solo, stomach, swimsuit, upside-down, wavy_hair, white_background