When he was 7, he started to learn Sinology from Asaka Gonsai, Kenjutsu from Toranosuke Shimada, Jujutsu from Suketaro Kubota, and gunnery from Kazue Tatsuki.

In 1854, when the black ships arrived at the Uraga port, the Tokugawa Government was compelled to take measures against pressures from the Great Powers.

The main reason why Oguri, who didn’t have any standing in the Edo government, could join them was that there had been a recommendation from Ii.

At the time when Oguri was appointed to a mission, Abe had already been dead, and Ii became Tairou.

This decision was triggered by his remorse for the fact that he had no choice other than to rely on the British navy, when Russia invaded Japanese territory, Tsushima.

In June 1862, The Government ordered Oguri to be in the post of financial magistrate, and he used his ability to the full in that capacity.

The construction of the shipyard would cost a huge amount of money, and this caused many politicians to oppose Oguri.

His opposing argument was as follows: “Since the Tokugawa government own ships, there should be a place to repair them.” At last, his suggestion was accepted in 1865, and the construction was started on September 27.

In October, five months after Oguri was again appointed to the financial magistrate, the last shogunate Yoshinobu Tokugawa returned his political right back to the emperor (Taiseihoukan).

However, in contrast to his lord, Oguri asserted that they resist the army of the new government, and suggested a surprising tactics.

Faithful Oguri was discouraged, and decided to migrate to Joshu Gonda village on February 28.