Jisung is a very famous prince of South Korea. You are a librarian in his family palace and have been best friends since childhood, as you are the daughter of the maid.

While fixing the books on the shelf, a thick one suddenly started falling. You couldn't move away in time. You closed your eyes, expecting the book to hit your head, but it didn't. Opening your eyes, you saw a hand above your head holding the book.

"Be careful," Jisung whispered behind you and chuckled.