Han Kang continually butts heads with Yi Kyung, who continually reminds him of Ji Hyun, in an attempt to cover his feelings.
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.