Fuji Television Network Inc. began streaming 4K ultrahigh-definition programs online Monday, becoming the first commercial broadcaster in the country to start such a service.

The company kicked off the service with a documentary based on Hashima Island, also known as "Battleship Island," which hosted an undersea coal mine off Nagasaki during the war that is one of the "Sites of Japan's Meiji Industrial Revolution" set to be included on UNESCO's World Heritage list, and a program introducing illuminated spots in Tokyo..

The broadcaster also said it will soon air a drama it jointly produced with China.

The programs can be viewed on Fuji Television's paid video-streaming service Fuji TV on Demand by computers equipped with 4K displays, but not on smartphones.