Based on the provided source material, there is no information available regarding a city named Wakasugi in the Fukuoka region of Japan. The term "Wakasugi" is identified exclusively as a Japanese surname.
Notable individuals who carry the Wakasugi surname include Hiroshi Wakasugi, an orchestra conductor; Kazuhiko Wakasugi, a fencer; Koki Wakasugi, a footballer; and Takashi Wakasugi, a Japanese-Australian comedian.