
Akita Prefecture is situated in the Tohoku region of Honshu, Japan's largest island.
It borders Iwate Prefecture to the east, Aomori Prefecture to the north, and Yamagata and Miyagi Prefectures to the south.

Ehime Prefecture occupies the northeast part of Shikoku, the smallest of Japans four main islands. It also contains a large number of small islands in the Seto Inland Sea.

Chiba Prefecture forms part of the Kanto region on Honshu, Japan's largest island.
It borders Tokyo and Saitama Prefecture to the east and Ibaraki Prefecture to the north. The prefecture's western coastline faces Tokyo Bay while the eastern coastline faces the Pacific Ocean.

Aomori Prefecture is part of the Tohoku region and is the northernmost prefecture on Honshu, Japan's main island.

Ibaraki Prefecture is part of the Kanto region on Honshu, the main island of Japan. It borders Fukushima Prefecture to the north, Tochigi Prefecture to the east and Saitama and Chiba Prefectures to the south.

Hyogo Prefecture is part of the Kansai region in south-central Japan on the island of Honshu. It is bordered by Osaka and Kyoto Prefectures to the west and Tottori and Okayama Prefectures to the east.

Hokkaido is the northernmost of Japan's main islands and the prefecture covers the entire island. It is separated from Aomori Prefecture on the island of Honshu by the Tsugaru Strait to the south. The two prefectures are connected by the Seikan Tunnel, an undersea railway tunnel.

Hiroshima Prefecture is on the southern part of Honshu, Japan's largest island. It borders Okayama Prefecture to the east, Tottori Prefecture to the north east, Shimane Prefecture to the north and Yamaguchi Prefecture to the west.

Gunma Prefecture is a landlocked prefecture in the Kanto region of Honshu, the largest of Japan's main islands. It borders Niigata and Fukushima Prefectures to the north, Tochigi Prefecture to the east, Saitama Prefecture to the south and Nagano Prefecture to the west.