Kumamoto is a prefecture of volcano and fire, with the capital city of Kumamoto (熊本). Active volcanos sometimes cause earthquake, however, at the same time there is a benefit of having so many natural and great-quality hot spring.
The prefecture has been successful in promoting its attractiveness using official character called Kumamon (くまもん). It is a black bear, because the name of the prefecture includes “bear” in their name. When you travel to Kumamoto, you may find this character everywhere.