[1] After completing his studies at Kansai University School of Law in 1919, he worked at Sakura Cement.

In 1921, he was posted to the Japanese Ministry of the Interior and became a commissioned officer in the Social Affairs Bureau.

[6] He sympathised with the people's aspirations for independence and opposed the occupation government's policies that did not agree with his views.

[6] Historian Gusti Asnan notes that Kerukunan Minangkabau was an early form of the House of Representatives (DPR), which was later established by the occupation government in each shu or province of Indonesia.

After leaving the governorship and returning to his home country, Yano worked as an auditor for the Nagata Seiki company.

Yano later taught the Three No's Principle (no taxation, no unemployment, and no war) to Toyosaku Kawanami,[12] the mastermind of the Three No's Incident in 1961, a coup d'état attempt against the Japanese government.