I tried a Standard Class Cabin on Ferry Sunflower.
They operate three routes between Kyushu and Kansai area. This video is from Oita to Kobe.

Beppu Osaka route. You'll also find the story about light sticks.
   • Taking an Old Overnight Ferry from Be...  

Kagoshima Osaka route. The ship is newer and nicer than other two routes.
   • Semi Private Stylish Capsule on the F...  

Thanks for watching.