Commonly known as "Cosmos," "Kairyoshinko" is the first rice suitable for sake brewing that was born in Akita in 1959. As its parent is "Shinko 190," it is a sibling of "Miyama Nishiki" in terms of lineage. However, their flavors are polar opposites, with "Miyama Nishiki" giving a hard impression while "Improved Shinko" has a smooth and relaxed flavor.