The Church is a small room with pews on either side connecting to the Snow World. Interacting with the red orb in one of these pews will transport the player to the Hanging Girls room. The Office can be reached by continuing north along the purple carpet. The reflections of stained glass windows shine on the floor, and endless choir singing can be heard.
It is theorized that Usotsuki regularly attended (or was made to attend) church, and that the school inside of the Office is a Catholic school. It is possibly worth noting that the area of the Snow World where the portal to The Church can be found is shaped like a child's head, and that the portal is where the brain would be located.