Fujiya Auto Co., Ltd.(Nishi Ward, Yokohama), 1954-55?
Interesting 90cc shaft drive machine from 1954, and the model was called the Minor ( マイナー ). The photos were published on the Japanese Two Wheel History Museum blog. It resembles machines made by DSK which were BMW copies, but they were 250cc and 500cc, and I don't think they made anything as small as 90cc.
The company appears to have reformed in 1955 as Fujiya Automotive Industry Co., Ltd. (不 二 矢 自 動 車 工 業 株 式 会 社) and released a 120cc chain drive two stroke machines called the Eagle (イーグ ル).