Daejanggeum 大壯錦, aka Daisonishiki, Tosanka 桃山香 and Daishogun 大将軍
Originally bred in Korea, early exports of the first generations of this variety were renamed in Japan as Tosanka, while later exports of smaller seedlings were renamed Daishogun. In Korea, both are known by the original name Daejanggeum, which would be read in Japanese as Daisonishiki.
This one is a first generation that I managed to get just under a year ago.