The story takes place in a future Akihabara where otaku culture has declined. Players play as a shopkeeper of an otaku shop. Together with the heroines who are in fact otaku girls, the shopkeeper start helping people claim their lost otaku memories back.
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.