Aso Boy, a JR limited express train that originally ran from Hakata, Kyushu, to Aso. Due to the 2016 Kumamoto earthquake, the road from Kumamoto to Aso was damaged and was changed to run between Beppu Station and Aso Station. All seats are reserved in the car. The black puppy is its LOGO. There are 4 carriages in total, and the third carriage (Cargo3) is a parent-child carriage. The cafe, ocean ball pool, and stamping are all located in this section. A must-do JR train when going to Kyushu.