ガス灯台の国「トーダイン」、その国で国民の生活を支えるガスを発明したボボンゴハカセのおはなしです。
王さまがハカセに命じたムチャな発明とは？

"To-dain" is a country with a famous gas lighthouse. This is a story of scientist named Bobongo who invented gas to support people's life in To-dain.
What was an absurd order king made that troubled Bobongo?