1girl, o, ass, beach, bikini, blush, breasts, brown_hair, flower, hair_flower, hair_ornament, idolmaster, idolmaster_cinderella_girls, large_breasts, light_particles, looking_at_viewer, lying, mimura_kanako, on_side, outdoors, plaid, plaid_bikini, red_bikini, slope_(check238), solo, swimsuit, thighs, water