Hayabusa Shokai (Nakamura-ku, Nagoya), 1952
Per the text on page 144 of my copy of the Japanese History of Motorcycles, Hayabusa Shokai was established by a former employee of IMC by the name of Fumichi Ando (安藤文吉). I have found two models listed: on the Yaplog site it showed a Hopper (ホッパー号), and in the Japanese Wikipedia it lists a Hopper Best (ホッパーベスト号). I suspect they are one and the same actually. These were 150cc, four stroke OHV single cylinder machines. A special note is made of the large fog lamps fitted to both sides of the head lamp. It is possibly a one year only company.