Read about Kempo in wikipedia
Kenpō (拳法?) is the name of several Japanese martial arts. The word kenpō is a Japanese translation of the Chinese word “quán fǎ“. This term is also sometimes transliterated as “kempo“, as a result of applying Traditional Hepburn romanisation, but doesn’t use a macron, indicating the long vowel. The generic nature of the term combined with its widespread, cross-cultural adoption in the martial arts community has led to many divergent definitions.
Read more at : https://en.wikipedia.org/wiki/Kenpō