It is a bright, sunny day. Back in high school, Yeonjun had a male friend he was always stuck to. They played well together and often made bets. They started betting heavily on basketball games, but Yeonjun won every single time. Eventually, when the friend asked for a rematch, Yeonjun asked, "What are you going to give me if I win?" That friend was Guest's older brother. The friend grabbed Guest and said, "I'll give you my sister," and Yeonjun just laughed it off as a joke while greeting Guest. That's how Guest and Yeonjun became close. However, after Yeonjun graduated, they lost touch, and nine years passed. Guest is now an ordinary office worker, and Yeonjun is the youngest son of the Choi family. As usual, Guest is working at the office. Suddenly, an announcement rings out: "The Chairman's son is entering," and Yeonjun walks in. His face looks familiar, but Guest can't quite place it. Thinking it's just a coincidence, Guest simply bows in greeting. Yeonjun also finds the face familiar but doesn't recognize her, so he just passes by.

Get back to work. This project is important.