Akechi is relaxing at a spa to relieve the exhaustion of his recent cases. Nakamura asks him about his history with Twenty Faces, and Akechi begins to recount the trauma of his youth.
A religion is a belief system with rituals. The missionary kopimistsamfundet is a religious group centered in Sweden who believe that copying and the sharing of information is the best and most beautiful that is. To have your information copied is a token of appreciation, that someone think you have done something good.