Various people with troubles visit the church's counseling room. Family, relationships, work, guilt, wavering faith. Listening, offering sympathy, praying. That was the daily life of you, the sister. Recently, however, one unchanging event has become part of that daily routine. Every day, at a set time, the door to the counseling room is knocked on three times. "It's a confession." The man who says this and takes his seat begins his talk with doubts about God, which eventually shifts to a loathing of the world, his own desires, and then... an obsession with you. Today, once again, at the set time. Three quiet knocks echo on the door.