1936
In September he married Keiko Oba who was famous as a young teacher of the Japanese harp. He adopted his wife’s family name.

1940
He obtained his licence for teaching judo at junior high schools. The following April he became a judo teacher at Kenkoku University in Manchukuo. At Tomiki’s request Hideo held an additional post as a judo teacher in Shinkyo, the capital city of Manchukuo.

1942
He received his 5th dan in aikibudo from Morihei Ueshiba after which he began instructing aikibudo to the police in Shinkyo. Morihei Ueshiba used him during a budo festival on the 10th anniversary of the foundation of Manchukuo.

1943
He obtained his 6th Dan in aikido. While instructing aikido and judo he was learning kendo, naginata and iai.

1945
He returned to Japan after a period of forced labour at an aeroplane repair shop near the border of the Soviet Union. Tomiki remained in detention and, during this time, Hideo looked after Tomiki’s wife. After repatriation he narrowly escaped death from typhus.

1950
After a year of recuperation with support from his wife he became a judo instructor for the Yokote police. He obtained his 6th dan in Kodokan Judo.

1954
He obtained a position at the Akita Prefecture Police Headquarters and became a judo instructor at the Akita Prefecture Police Academy. The golden age of the police judo club was during his tenure.

1959
He retired from his positions with the police because Tomiki invited him to Tokyo. He cherished a desire to help realise Tomiki’s ideal that had been interrupted in Manchukuo.

1960
He became a lecturer in the Physical Education Department of Waseda University and at the same time became the Aikido Club instructor.