Hiroshima's most well known fireworks festival. 5000 fireworks explode over the sea silhouetting Itsukushima Shrine's O-torii. Worth seeing, but expect huge crowds (300,000 people showed up last year) and you should get there early to avoid a fight for the prime viewing spots. For those relying on the train, a good tip for the return trip on the way back to Hiroshima is to take the first train heading in the opoosite direction (Iwakuni bound) one stop so you can…