Aso Boy (Asu Boy), originally running on the JR express train from Hakata to Asu in Kyushu. The road from Kumamoto to Asu was damaged due to the 2016 Kumamoto earthquake and was changed to run between Beppu and Asu. The full car is designated seat. Black puppy is its LOGO. There are 4 sections in the carriage, and the third section (Cargo3) is a parent-child carriage. The cafe, ocean ball pool and seal are all located in this section. A must-do JR train to Kyushu.