1girl, o, ahoge, aketa_mikoto, arm_up, bed_sheet, bikini, black_bikini, blonde_hair, blush, breasts, breasts_apart, brown_hair, gradient_hair, halterneck, idolmaster, idolmaster_shiny_colors, large_breasts, looking_at_viewer, lying, multicolored_eyes, multicolored_hair, navel, on_back, solo, swimsuit, upper_body, yuro_(7_yuro)