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.
After the Meiji Restoration, Shinohara transitioned from a career as a businessman to a devout Christian. His memoirs recount significant events in his life, including the Shinsengumi, the Aburakōji Incident, and his assassination attempt on Kondō Isami.