Riding the Aso Boy! Train: A Family-Friendly Trip from Kumamoto to Mt. Aso
My husband loves designer trains and Mt. Aso, so for Father’s Day I planned a simple overnight trip combining both. We travelled from Fukuoka to Kumamoto by Shinkansen, transferred to the Aso Boy! train and spent one night at the family-friendly Kamenoi Hotel Aso Park Resort before returning to Kumamoto the following day.
What surprised me most was how well the itinerary worked. The connections were straightforward, one night felt like enough time for a short escape, and the train schedules lined up in a way that made the entire trip feel relaxed. Both of our Aso Boy! journeys were also remarkably quiet, with parts of the train almost entirely to ourselves.
The designer trains are popular with trainspotters - if you’re sitting by a window you’re bound to see a few cameras pointing back at you.
Travelling from Fukuoka to Aso by Train
We began at Hakata Station and took the Kyushu Shinkansen to Kumamoto, adding roughly 40 minutes and an additional fare to the trip. It was still worth it. Transferring from the bullet train to the Aso Boy! at Kumamoto Station was seamless, and we avoided the traffic, navigation and general stress that can come with driving from Fukuoka.
From Kumamoto, the Aso Boy! follows the Hohi Main Line through the countryside and into the Aso caldera. The journey to Aso Station currently takes around 90 minutes, although exact times vary depending on the service and seasonal timetable. The train continues one stop farther to Miyaji. Aso Boy! does not operate every day, so it is important to check the official operating calendar before planning a hotel or connecting journey. JR Kyushu’s current Aso Boy! timetable and operating calendar
The train is entirely reserved seating. Reservations open one month before departure at 10:00 a.m., and the more distinctive seats—particularly the White Kuro Seats and front panorama seats—can be selected through JR Kyushu’s reservation system.
The interior is decorated with JR Kyushu’s black dog mascot, Kuro. There are reportedly 101 versions of him hidden across the train’s interior and exterior, appearing in different poses and expressions.
The White Kuro Seats for Parents and Children
On the outward journey, we booked the White Kuro Seats in Car 3. These are unusually wide parent-and-child seats combining an adult-sized seat with a smaller seat beside the window. The child’s seat remains on the window side regardless of the train’s direction, giving smaller passengers a clear view of the countryside.
Our daughter was three at the time and could share the seat with an adult without requiring a separate ticket. Officially, one adult and one child under six can use a White Kuro Seat with one adult reserved-seat fare. Children aged five and under generally travel free on JR Kyushu when they do not occupy a separate standard reserved seat; purchasing a separate seat requires the appropriate child ticket.
This made the journey surprisingly affordable. A regular one-way adult ticket between Kumamoto and Aso is currently listed at approximately ¥3,080, including the basic fare and an ordinary reserved-seat limited-express fee during the regular season. The final price can vary by travel date and seat selection, but compared with some of Kyushu’s more elaborate sightseeing trains, Aso Boy! felt very reasonably priced.
A Train Designed Around Small Children
Car 3 is the family carriage, and it is difficult to think of another train better suited to travelling with a young child. Alongside the White Kuro Seats, the carriage contains Kuro Cafe, sofas, a baby play area and a children’s space known as Kuro Club.
Inside Kuro Club, children can explore a wooden ball pool, a small Japanese-style room and a library corner with picture books. The floor of the family carriage is also raised to help children see more easily through the windows. Parents still need to accompany children in the play areas, but being able to get up, move around and play makes a significant difference on a longer journey.
The cafe sells drinks, desserts, snacks and Aso-themed products, including Jersey milk ice cream and an Aso Boy!-exclusive children’s pudding. On regular operating days, it gives families an easy backup if snacks run out earlier than expected.
Some additional services operate without the usual cabin attendant or onboard sales. On those dates, facilities including the wooden ball pool, library and Kuro Club may be unavailable, so check the operating information carefully if these features are an important reason for choosing the train.
Staying Overnight Near Aso Station
For a one-night trip, we stayed at Kamenoi Hotel Aso Park Resort, located close to Aso Station. The hotel is approximately 15 minutes away on foot and operates a complimentary shuttle that takes around five minutes, making it practical for travellers arriving without a car.
The hotel is designed with families in mind and currently offers an all-weather indoor pool, hot springs and several family-oriented room types. It gave us an easy base for the night without adding another complicated transfer to the trip. Kamenoi Hotel Aso Park Resort
Aso Station is also beside Michi no Eki Aso, a roadside station selling local produce, bread, sweets, drinks and bento. Even without a car, it is a useful place to collect food for the train or find a few locally made souvenirs before leaving.
Panorama Seats for the Return to Kumamoto
For the return trip, we booked seats in the panorama section at the end of the train. The Aso Boy! has an unusual structure in which the driver sits in an elevated cabin, leaving passengers with a wide, nearly uninterrupted view through the front windows.
The panorama section has a spacious one-by-two seating layout, with windows wrapping around the front of the carriage. From our seats, we could watch the railway unfold ahead of us as we travelled away from Mt. Aso and descended toward Kumamoto City.
The view was completely different from the family carriage. On the outward journey, our focus had been on the child-sized seat, cafe and play areas. On the way back, the landscape became the main event. The wide windows showed off the mountains and countryside beautifully, making the return journey feel like its own experience rather than simply a way of getting home.
If possible, I recommend trying the White Kuro Seats in one direction and the panorama seats in the other. Together, they show the two sides of Aso Boy!: one designed around children and one created to make the most of the scenery.
What to Eat on the Aso Boy!
Special Aso Boy! bento can be reserved online in advance. Current options include a child-friendly Kuro bento with mild Akaushi beef keema curry and a larger Aso Boy! bento featuring Akaushi beef cutlet and simmered beef tendon. Reservations are accepted from one month until three business days before the journey.
Advance ordering is not essential, however. You can bring your own snacks, purchase a bento at the station or buy a small selection of food and drinks onboard.
For our return journey, we visited Michi no Eki Aso beside the station and assembled our own feast of local snacks, bento and bread. Having a table full of Aso food while watching the landscape pass through the panorama windows was a relaxed way to end the trip.
Kyushu’s Designer Trains
JR Kyushu refers to its sightseeing trains as D&S Trains, meaning “Design and Story.” Rather than treating the train as transport alone, each service is given a visual identity connected to the landscape, history or culture of its route.
A small correction to my original note: not every sightseeing train currently running in Kyushu was designed by Eiji Mitooka. However, Mitooka and his firm, Don Design Associates, have shaped many of JR Kyushu’s most recognisable trains and helped establish the company’s distinctive approach to railway design.
His work is known for bold patterns, rich colours, carefully crafted woodwork and interiors that combine nostalgic details with modern ideas. On Aso Boy!, that design language is made playful and practical for families. The train feels imaginative without becoming inconvenient, and the child-focused features are genuinely useful rather than decorative.
There are many D&S trains running across Kyushu, and I highly recommend including at least one in your itinerary. I also recently rode Two Stars 4047 toward Nagasaki, which you can read about here:
Aso Boy! Visitor Information
English Friendly: 4/5
JR Kyushu provides an English information page and an English-language online reservation service. Major stations including Hakata and Kumamoto have multilingual signs and staffed ticket counters. Some onboard announcements and cafe interactions may still be primarily in Japanese.
Route:
Kumamoto Station to Aso Station and Miyaji Station via the Hohi Main Line.
Journey Time:
Approximately 1 hour 30 minutes from Kumamoto to Aso. Current schedules include departures from Kumamoto at 9:57 a.m. and 1:36 p.m., but services do not operate daily and timetables are subject to change.
Access from Fukuoka:
Take the Kyushu Shinkansen from Hakata Station to Kumamoto Station, usually around 40–50 minutes depending on the service. Transfer at Kumamoto Station to Aso Boy! Allow comfortable transfer time, particularly when travelling with children or luggage.
Tickets and Reservations:
All seats are reserved. Tickets go on sale one month before travel at 10:00 a.m. White Kuro Seats and panorama seats can be selected through the JR Kyushu online reservation service. Box seats must currently be purchased through a staffed JR ticket office.
Estimated Cost:
Approximately ¥3,080 one way per adult between Kumamoto and Aso for an ordinary reserved seat during the regular season. Prices may vary by date and seat type. The Shinkansen between Hakata and Kumamoto is an additional cost.
Children’s Fare:
Children aged five and under can generally travel free when they do not use a separate reserved seat. One adult and one child under six may share a White Kuro parent-and-child seat using one adult reserved-seat fare. A separate ticket is required when a young child occupies their own reserved seat.
Food and Drinks:
Snacks, desserts and drinks are sold from Kuro Cafe on regular operating days. Special bento can be reserved online from one month until three business days before departure. Passengers may also bring their own food.
Closest Hotel:
Kamenoi Hotel Aso Park Resort
1230 Kurokawa, Aso City, Kumamoto 869-2225, Japan
Approximately five minutes from Aso Station by complimentary shuttle or 15 minutes on foot.
Google Maps:
Aso Station
Important Note:
Aso Boy! operates only on selected dates. Confirm the operating calendar before booking accommodation or connecting transportation. On certain additional-service dates, onboard sales and children’s play facilities may not be available.
