Mr. Kihachi Koyama, the owner of Koyama Shoten, a local sake shop in Tama, Tokyo, has a close relationship with the Okuharihama brewery. Because of this connection, Okuharihama created a special brand just for him. The aroma is gentle, and when sipped, it reveals a rich umami, a hint of sweetness, and a unique acidity that finishes with a clean, sharp cut. Despite its substantial body, it also has a lively feel, adding a refreshing impression. When warmed, it gains a touch of roundness but remains crisp, almost giving a sense of coolness. It becomes smoother and easier to drink, with fewer pronounced flavors than when chilled. Lukewarm is the recommended serving temperature.