Tobishima-kaido, officially known as "Akinada-Tobishima-kaido"
Located on the west side of the Shimanami Kaido, it is a place with a great atmosphere where you can tour the islands of the Seto Inland Sea, see the old streets of Mitarai (townscape preservation district), and go swimming at "Kenmin-no-hama (Hiroshima Prefectural Beach)" in summer.
In this in-vehicle video, we drive across the Akinada Bridge to Okamura Port on Okamura Island in Ehime Prefecture, and from there we drive along the coastline of the islands back to the Akinada Bridge.
Many of the roads along the coastline are narrow, so please be careful when you actually go there.