Enshu Light Motor Industry Co., Ltd., 1955?
Mike was kind enough to send me this scan from the June 1955 issue of the Japanese magazine Auto-By. Based on the text, this appears to be the rebirth of the Young (ヤング) which folded in 1954 (see this link). The new machine is called the Plus (プラス) and is a 125cc four stroke. I suspect it was a one year only company, as I've been unable to find any other entries for subsequent years.