Bought this last year from the daughter of the person that worked with this bonsai. She had no idea what kind it is. 
Hallo Bonsai Bentley,
it could be a āWakaebisuā. If the other blooms are with the same color, double Leaves and the pistil at the ground is conspicuous thick, it is one. But with just one flower itās a bit difficult.
Thanks for the feedback! Another flower is slowly opening. The color appears to be the same though. Iām thinking of repotting it this year, so I was going to let the two flowers open and then cut off the rest to save its energy.
Is it Satsuki? If so, you might be able to find a match on this siteā¦
I agree on possibly āwakaebusiā, I dug 25 from a landscape a little over a year ago. They are a strong variety.
This is exciting news. Iām so leery of the repot, but it has to be done. Itās basically in sand and who knows how long itās been in the container this way.