Kurokawa onsen to Kikuchi onsen bus

Hi, I would like to go from Kurokawa onsen to Kikuchi onsen by Bus on weekday in August. Must I change the buses in Kumamoto or is there other way?

Neither Kurokawa onsen nor Kikuchi onsen are close to any train station so you can't use Hyperdia to see how to travel. You can use Googlemap to see the route. Below is the route googlemap shows.

https://goo.gl/ZSpCHf

I am not certain whether this works for you since I am a Japanese and use Japanese version of the softwares.

Also you can use Navitime, but this is only in Japanese language.

https://goo.gl/y4AuaT

The results are basically identical. Note that this is for a specific date (week day of early May).

1. Bus: Kurokawa onsen 10:35 12:22 Oozu-eki-minamiguchi.
2. Bus: Higo-Oozu-eki 13:00 13:45 Kikuchi onsen.

You must walk from Oozu-eki-minamiguchi bus stop to Higo-Oozu-eki bus stop, but it will take a few minutes.

thank you very much for your help:-)