Minoru Mochizuki's son (b. 1936), Hiroo Mochizuki, studied martial arts under his father from a very young age. He studied widely, in the eclectic system of his father, but whereas his father had perhaps a particular talent for judo, his son had a greater affinity for karate. Studying in France from 1957 to 1958 as a university student, he returned to the country after the death of one of his father's students Jim Alcheik and took over the large following that was growing for the art in that country. He introduced new kata of his own invention, employing both Western and Eastern inspired techniques and introduced a form of point sparring for karate and kobudo tournament styles.