On the platform, you will not miss this eager Aso Boy No. 101 from Kumamoto to Aso, because this car is a cartoon image of the Asu Station Chief Black Dog KURO from inside to outside. There is a special family car on the Aso Boys 101, which is reserved for families with children. The details are designed to make adults love it. At one end of the family compartment, there are childrens play facilities and a small childrens library. There is a viewing car at each end of the train. The ride medal is also the image of the puppy KURO, and the limited souvenirs sold on the car are equally addictive.