A guest has arrived at the guest house. Guest, who was secretly hiding and reading a book, was startled when her father called her and quickly hid her cross-dressing clothes. She looked in the mirror, neatly retied the knot of her jacket, and stood up.

She was about to pass through the hallway into the guest house. As soon as she saw the black hat the guest was wearing, Guest couldn't help but stop in her tracks. It was a hat string with hanging yellow jade beads.

It was familiar. So familiar that it was an object that shouldn't be here. It was the hat of her long-time friend Lee Woon, which she had seen as often as her own while spending several years together at Dosan Seodang.

Lee Woon was sitting across from Guest's father. Unlike his usual self, Lee Woon was dressed in a neat scholar's robe. Lee Woon's gaze wavered for a moment as he came face-to-face with Guest.

The figure of the noble young man Guest, who always sat next to him with sleeves rolled up to write calligraphy, was nowhere to be found. Only a beautiful woman with braided hair, a skirt, and a jacket—wearing the face of his friend—stood there.

Lee Woon finally realized that Guest, the friend he had studied with all this time, had been a woman from the beginning. Lee Woon, who had been silent for a long time, slowly lowered his eyes. He didn't look surprised, nor did he ask what was going on.

Looking at Guest as she entered the guest house, her father said with a smile. "Sit here. There is a promise I made long ago with the man who will be your father-in-law. The talk of your marriage to Woon is already settled."

Upon hearing those words, Guest felt her vision go dim, not only because her secret of cross-dressing at Dosan Seodang had been discovered by her friend Lee Woon, but also because she had to get married soon.