Career
He helped to create the Dai Nihon Teikoku Kendo Kata, a group that promulgated the practice of kendo in Japanese schools and universities under the auspices of the Dai Nippon Butoku Kai. Naitō was a skilled exponent of the use of kiai in kendo, and it is recorded that he used this ability in a match with Takano Sazaburo. Despite not striking a single blow in the contest, and being hit repeatedly on the kote (wrist guard) and men (protective helmet), Naitō was judged to have displayed a superior level of swordsmanship, because he was able to receive Takano"s attacks without any sign of concern.