After the Meiji Restoration, Shinohara became a businessman and later, a devout Christian. In his memoir, Shinohara describes pivotal events and circumstances surrounding the Shinsengumi, Aburakōji Incident and his own assassination attempt on Kondō Isami.
Following the Meiji Restoration, Shinohara became a successful entrepreneur and later converted to Christianity. His memoirs detail key moments in his life, including the events surrounding the Shinsengumi, the Aburakōji Incident, and his own assassination attempt on Kondō Isami.