Official Titles:
Genbukan World Ninpo Bugei Federation, President
Kokusai Jujutsu Renmei/Federation, Executive Director
Toshitsugu Takamatsu, whose birth name was Jutaro and real name Hisatsugu, later changed his name to Toshitsugu.
If Fumio Akimoto was considered the senior student of Takamatsu Sensei, then his second most accomplished student would have to be Masaharu Kimura.
Grandmaster Tanemura originally met Kinbei Sato as a university student, but it was not until 20 years later that he would discover that Sato had also been a student of Takamatsu.