1966 - Kotaro Oshima, kendo Kyoshi 7-dan, of Waseda University in Japan visits CKD.

1974 - A kendo team from Waseda University in Japan visits CKD, led by Toshio Watanabe, kendo Hanshi 8-dan, and Kozo Ando, kendo Kyoshi 7-dan. Dr. Gordon Warner, kendo Kyoshi 7-dan, visits CKD

1976 - Masami Tanaya, kendo Hanshi 8-dan, Sadakiyo Matsumoto, kendo Hanshi 8-dan, Kuniyoshi Okuzono, kendo Kyoshi 7-dan (later kendo Hanshi 8-dan), and Shinjiro Mineshige, kendo Renshi 6-dan, all from Japan, visit CKD

1986 - Takeshi Nakamura, kendo Kyoshi 7-dan (later kendo Hanshi 8-dan), of the Tokyo Metropolitan Police Academy in Japan, visits CKD.

1987 - Tohru Iwahori, kendo Kyoshi 7-dan, of the Osaka Prefecture Police and winner of the 1986 All Japan Kendo Championship, visits CKD.