@Cadillactaste is your plan is to graft the red on to the Toyo nishiki?
Technically the cultivar name 'Toyo nishiki' is white, pink and red flowered, but more often we see only the white and pink flowers. I've never heard of Red Toyo nishiki, keep in mind the color and size of the leaves as well as the flower size if you intend graft.
None of my Toyo nishiki's has given any red flowers as of yet. I am curious if it's required like in azaleas that you must take cuttings from specific branches that do produce red flowers. If this is the case we will only see the white and pink flowers.