The Iyonada Monogatari is a luxury sightseeing train running along the coastline of the Iyonada area of the Seto Inland Sea.
Please take a look at this fascinating movie about the sightseeing train!
Source: JR Shikoku
About the Iyonada Monogatari written in Japanese
The official website of Tourism Matsuyama has also an English article about the Iyonada Monogatari.