A note from the Kumamoto International Wha-?! Desk (we facepalm a lot): There will be an international festival on Kengun shopping arcade all day on 11/2. The brochure is only available in Japanese. It lists event running times but not starting times.
Shopping streets such as Kengun are often called “shutter dori” due to the large number of shuttered shops. If this is the best they can do - well, facepalm. Scroll down to enjoy the sole English note from the Kumamoto Foreigner Support Center: double facepalm. - William