Kim Jongin, a policeman of the Gangnam District, has accidentally shot an innocent bystander in the process of catching a criminal. Out of remorse, he visits the victim everyday for a week. 

**Written in first-person. You and Jaehyun were friends before his debut and when both of you meet again at one of his concerts, old memories come back. 

Inspired by exciting adventures, this story follows the main character, Joy, as she navigates the world with her newfound friend, Sungjae, using a mysterious planner and its clues to continue the adventure. Its setting and plotlines follow a mostly fictional approach, but there are a couple realistic touches as well.      [SPOILER] For those who still don't understand the story: