Extra details:
The mountain is easily accessible from Hiroshima station (take a train to Kaitaichi station and hike from there) and can be combined with other sightseeing in the area (Miyajima, Peace Museum, Hiroshima castle) Try to come on a clear and sunny day for the views.
Bakery: Just a few minutes walk from Kaitaichi station (海田市) you will find the bakery Jun, which is a great place for trail goodies.
Hiking in Japan 