Nishiki bicycles were very popular here through the 1980's and were widely distributed and sold... they have stood the test of time very well and I see tons of them on the street and in my shop.
They used to be the choice of messengers as they were relatively light and rugged frames and a friend of mine used his old early 80's Nishiki touring bike for a world tour which he is still on... his bike was destroyed in Iraq by an errant driver and probably had over 50,000 miles on it.
Norco and Nishiki also had a long business association as Norco used the Nishiki name to distribute Asian made bicycles which were built in Canada to avoid import duties and reduce their prices.