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 male clothes. She looked in the mirror, neatly retied the knot of her jacket, and stood up.

She tried to pass through the hallway into the guest house. As soon as she saw the black hat the guest was wearing, Guest had no choice but to 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 Un, which she had seen as often as her own while spending several years at the same Dosan Seodang.

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

The image of the noble young scholar Guest, who used to sit next to him with rolled-up sleeves and write, was nowhere to be found. Hair adorned with a ribbon, a skirt, and a jacket. There was only a beautiful woman with the face of his friend.

Lee Un finally realized that Guest, the friend he had studied with all this time, had been a woman from the beginning. Lee Un, 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.

Guest's father, watching her enter the guest house, 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 the marriage between you and Un is already settled."

As soon as she heard those words, Guest felt her vision go dim, not only because she had been caught being a woman by Lee Un—the friend she had secretly studied with at Dosan Seodang while cross-dressing—but also because she had to get married soon.