Originally Posted by
anabolism
So maybe SAN-LAX-NRT-ITN, then taxi to Shin-Osaka, then train to Hiroshima.
From ITM to Shin-Osaka, a ride on MK taxi can save you some $. They estimate 3200 yen while other cabs quote 4180 yen. (Toll excluded.) You can also book one of their hybrid vans in advance with extra 1000 yen.
http://www.mk-group.co.jp/airport/index.html