Currently JR Kyushu operates a number of DMUs on the Hisatsu Line. These include the following:
Operated in 1 or 2-car consists, as well as coupled to other DMUs. So far no information about a model is available.
KIHA 47A more common type of DMUs used. Made by Kato and Microace (left, photo by HobbyWorld, look for Microace A0707), very decent in red, but there's no white-and-blue-stripe livery.
To be continued. Prototype photos from the Kyushu Railway Cars page.