Access to Mt. Aso from Kumamoto. Kids friendly train, Limited Express Aso Boy!

Aso boyKumamoto, Misumi, Hitoyoshi, Aso, Miyaji
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Aso boy

This train, Aso Boy! connects Kumamoto and Beppu via Aso. When you go to Mt. Aso by a train, take the Shinkansen to Kumamoto and transfer to this train. This is the easiest way to get there.

This train offers not only access to Aso but also a big fun, especially if you travel with child(ren). This train is operated by the refurbished Kiha-183 series. This was completely redesigned by JR Kyushu chief designer, Eiji Mitooka. The facilities of this train make both parents and children enjoy the ride to Aso.

You will find how nice this train is for kids in this article.

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Route, schedule and trip time

Aso Boy! runs 2 round trips a day between Kumamoto and Miyaji. If you just need to access to Aso, you can use Trans Kyushu Limited Express too. This train is operated on same route. Aso Boy! connects Kumamoto with Aso or Miyaji in 1 hour and 30 minutes. You can see the timetable at JR Kyushu website (English page).

View Aso Boy! in a larger map



x:All trains stop


Aso Boy! is operated by KIHA 183 series. This train was redesigned just before this train was introduced to operate in 2011. This train has the observation seats with huge windows at both end. And there are many features for the family group and kids.

This train has a character. That is a black puppy that is called “Kuro-chan”. This character is drawn on both interior and exterior. Kuro-chan is everywhere and I am pretty sure that kids like it. This train have lots of playful mind.

The standard seat pitch is 960mm. But there are “Parent and Child seat” and semi compartment seat. These seats are quite different from the standard seat. I will show you all kind of seats below. There is no Green cars on this train. And all seats are reserved seat. You must make a reservation before you ride.

*Sonic Rail Garden has copyright for all images of accommodations below.

Train formation


*P=Panoramic observation seat R=Reserved seat FR=Reserved seat for family (Parent and Child seat)
Smoking is not allowed on these trains.


Car#1 Panoramic observation seat and standard reserved seat

Car#2 Standard reserved seat

Car#3 Parent and Child seat

Car#3 “Kuro Club” Kids play area
There are three facilities, wood ball pool, kids tea ceremony room and library.

Car#3 “Kuro Cafe”
You can buy drink, snack and souvenir. Kuro chan’s souvenirs are very popular. If you want to buy, go and get ASAP.

Car#4 Panoramic observation seat and standard reserved seat

Sanitary space

Passenger’s deck


  1. Rak says:


    I have a plan to go to Aso mt. in the morning of 12 july 2015.
    Checked in Hypedia there don’t have LTD. EXP KYUSHU ODAN TOKKYU 2 or Aso boy in the time table can you advice me
    and what station i have to go Aso or Miyaji


  2. Thashita says:

    Dear Takeshi san,

    I plan to go to Aso on Jan 10 2015 from Yufuin. Is there a training between to Aso from Yufuin? Base on hypedia searching it is complicated and require many transit.

    Does Aso Boy run on Jan 10 2014?

    Appreciate your advices.

  3. Jeff says:

    Hi Takeshi,

    Can i ask if the special trains in Kyushu run in december?
    I cant seem to find any information about it.
    Thank you for your kind assistance.

  4. Sharon says:

    Hi, I plan to go to Aso on Jul 16-18, would like to know if ASO Boy will operate on Jul 16 and 18. And, are all the seat needed to have reservation and no free seating? If I reserve the seat at Hakata station (on Jun 12), will it be too late to secure a seat?


  5. Sida says:

    Hi, I have plan to take Aso boy from Kumamoto Station to Aso on October 13th, 2014. Would you kindly tell me if Aso boy is operated on that day and can I book ticket in advance.

    Thank you

  6. Joe says:

    Hi, I have plan to take Aso boy from Kumamoto Station to Aso on April 3rd, 2014.
    Would you kindly tell me if Aso boy is operated on that day and can I book ticket in advance by using Kyushu Pass from Hakata Station.
    Thank you so much

  7. NIng says:

    I have plan to Mt. aso in 3Mar2014. I don’t see aso boy timetable (aso–>kumamoto) in this day,is it on annual inspection?

  8. Melissa says:

    We will be in Kyushu the beginning of February 2014. Will Aso Boy be running on Feb 5, 2014? Thank you.

  9. Jay says:


    I m holding to a JR west sanyo pass :
    I need to know whether aso boy is included in the pass free of charge?

    Is there a web link which i can easily check which train is available in the pass?

  10. Jean says:

    Nice trains, Wanna visit Japan.

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