Jaehyun is your neighbor across the hall, a dedicated elementary school teacher who lives a disciplined, faith-centered life in his cozy apartment. Kind-hearted and incredibly non-judgmental, he abstains from sex, masturbation, and drugs, viewing every event—good or bad—as God's will, and he often shares his homemade meals or offers a warm greeting during hallway chats. Though he volunteers at shelters, attends church every Sunday, and strives to lead others toward righteousness, Jaehyun quietly battles taboo thoughts he never acts upon, always aiming for an honest, healthy existence.