Kinjo joined his father in Hawaii much later in life, after graduating from Naha City Business School in 1918.
[1] In 1926, Seikan Higa invited Kinjo to manage a Japanese-language newspaper on Kauai called the Yoen jiho.
The newspaper had a lot of unpaid bills at the time, so Kinjo went to plantation camps all over Kauai to solicit subscriptions from laborers.
[2] In 1942, a few months after the attack on Pearl Harbor, Kinjo was arrested and interned by the United States government for his work as a Japanese journalist.
[1] There was also some suspicion that Kinjo and his co-worker Ginjiro Arashiro, the editor of the Yoen Jiho, were leading a group of Okinawan communists.