1girl, p, bed_sheet, bikini, black_bikini, blonde_hair, blush, blush_stickers, bracelet, breasts, breasts_apart, brown_hair, collarbone, dark-skinned_female, dark_skin, gradient_hair, groin, hair_spread_out, idolmaster, idolmaster_shiny_colors, izumi_mei, jewelry, large_breasts, long_hair, looking_at_viewer, lying, multicolored_hair, navel, on_back, saito_katuo, solo, straight_hair, swimsuit, tongue, tongue_out, very_long_hair