I have seen many different Cynops already, none like this though. The Atsumi race would be doubtfull I think , since they seem to be extinct (for as far as I am concerned). Why not ask your breeder ?
The red fins on the tail are unusual, also the lateral row of white-yellowish dots ?? do you have an image of the belly pattern or does it come close to Sasayame race..
Anyway whatever it turns out ot be, it 's a nice animal