[1][2] He passed the higher civil service diplomatic examination (Japanese: 文官高等試験外交科) in October in 1924.
[2] Beppu started working for the Ministry of Foreign Affairs in March 1926 as a British embassy clerk (Japanese: イギリス書記生).
[20] In 1940, Beppu, as a Japanese Consul in Liverpool, rented a private house and opened a cosulate in Dublin in the Irish Free State.
[22] The Embassy of Japan in London was closed after the beginning of the war, and it is assumed that the Dublin conslate would have been responsible for helping and evacuating Japanese citizens in the United Kingdom to Ireland if the United Kingdom had broken off diplomatic relations with Japan and they had been subject to danger, which did not happen.
[21] Due to the rise of the anti-British sentiment in Ireland during the World War II, Thomas Mullins, an IRA member and later the Leader of the Seanad, bought all the rice in Dublin to prepare for Japanese food and celebrated the fall of Singapore and Arthur Percival's surrender on 15 February 1942 with Beppu and other Japanese officials at the consulate of Japan.
[25] These telegrams were intercepted and decoded by the Government Code and Cypher School in Bletchley Park and preserved in The National Archives of the United Kingdom.
[26] After the defeat of the war, Beppu had sabotaged the request from the allies to hand over the consulate's assets and documents to them for three years "with the tacit support of the government of Ireland".
[35] Ryōtarō Shiba referred to him as a "besieged soldier under the war" in On the Highways: Travel in Ireland II (Japanese: 街道をゆく 愛蘭土紀行II).