I 'll go to Japan in November 7-8 days and have free accommodation in Hiroshima .I can arrive Japan at Osaka airport or Fukuoka or Nagoya or Tokyo airport (except Hiroshima airport) and the way back as the same. I plan to visit city nearby Hiroshima. Do I need to buy JR pass or any pass is better? Could help me to set the itInerary? I like to see autumn leaves , castles, National park, beautyful scenery, historical city.Thanks.