Kim Joonmyun has an excellent sense of humor, and woe to anyone who doubts him. It's just that he has a different way of expressing his humor. Joonmyun lets his wit peek out through subtle puns that almost always go missed, a slight tilt of the eyebrows when making a microscopically suggestive statement, mismatching socks when he's feeling whimsical... His assistant Huang Zitao always tells him to lighten up, but it's hard when Joonmyun's career is built on obsession with a healthy side of paranoia.

The detective doesn't like to think about how investigating cases of adultery is his greatest source of income. Because even when the suspected partner is innocent, it doesn't negate the fact that Joonmyun was hired in the first place. When Joonmyun dreamed of being a private investigator, he could never have predicted that he would spend most of his career driving relationships apart. It doesn't take someone with Joonmyun's observational skills to see the lump in a client's throat, the sweaty palms, the thinly veiled dread of the investigative results.

When Joonmyun receives the phone call from Park Yura, he is wrapping up yet another adultery case, this time between a Korean-Chinese couple. His client, a skyscraper of a man, had suspected his husband, a Korean man half his size with a bright, kittenish smile and a musical laugh, of cheating on him with another soft spoken, round-cheeked Korean man. It turned out that he wasn't just cheating on Joonmyun's client with that man, but also with the other Korean man's Chinese husband. As soon as Joonmyun revealed the messy love rectangle, he had pressed the business card of his favorite divorce lawyer into the softly sobbing client's hand.

Joonmyun is clearing away the pile of tissues from his desk when he hears a soft knock on the door to his office.

"Come in!" he calls, quickly shoving his waste basket aside and straightening his framed illustration of Sherlock Holmes.

"You must be Park Yura," Joonmyun greets her warmly, but with reservation. He must be careful to not seem overly enthusiastic as he is wont to do, since an overwhelming majority of his clients would prefer not to be clients at all.

"Yes, nice to meet you." She gives him a tight smile, and Joonmyun's mind automatically goes into detective mode. Yura is a tall woman who carries herself with a confidence that makes her seem even taller. But the way she can't quite meet Joonmyun's eyes and the fidgetiness in her fingertips suggest that her customary composure has been shaken.

"What can I do for you today?"