Hi friends.
I might know Samurai doesn't exist in Kumamoto now.
But you can feel their spirit at somewhere in Kumamoto.
I work at Kawashiri. You can watch how to make knife at KOUGEIKAIKAN (工芸会館)
There is some professional 刃物hamono maker in Kawashiri.
https://youtu.be/x-ZBxXXghj0

https://images.app.goo.gl/CURyPDF38QeqLFha6
Kawashiri has lots of old, traditional buildings and culture, and professional person.
I recommend to visit here. ーAtsuko(Ü)