He conducted his business according to a principle that later became the base of one of the most successful businesses in the world: easy to cook, cheap and tasty food. He named the restaurant Yoshinoya, after its birthplace, the town Yoshino from the Nara Prefecture.
Today, Yoshinoya is a huge chain, with more than 1,400 restaurants (some of them outside Japan) and the Yoshinoya specialty, the gyudon "beef bowl" became so popular that two other large chains are also making it: Matsuya (established in 1966) and Sukiya (established in 1982).
EXIF info:
Nikon D700
Lens: 14mm F/2.8D
Focal Length: 14mm
Aperture: F/2.8
Shutter Speed: 1/200s
ISO Sensitivity: ISO 640