Hanagami is a pink sake that got its name after the fourth-generation brewery owner, Shigeaki Utsunomiya, wrote a letter to Ryotaro Shiba, expressing his heartfelt desire to name this flower-colored sake after the novel "Hanagami," and received a handwritten postcard in return from Shiba. The novel "Hanagami" tells the story of Masujiro Omura, a patriot of the Meiji Restoration, and Ine Kusumoto, the daughter of Siebold. The brewery's location is also connected to the novel, as Ine trained as a doctor under Keisaku Ninomiya, a disciple of Siebold, in Unomachi, where the brewery is located.