Yoo Bo-na

A warm, friendly, considerate person, Hee Jae is surrounded by people who claim to know and love her. The problem for Hee Jae is that she isn’t really sure if she really understands herself. On the other hand, Mi Na is Hee Jae's confident and energetic best friend and colleague at Play Books, a supplier of books and related products centered around sex and romance. While an expert in how to achieve physical pleasure, her understanding falls short on romantic relationships. When they find themselves told to take over hosting a sex and romance advice podcast, the two feel more than a little lost...

Do-joon, who only meets So-jin who is younger, gets tired of her foolishness and decides to meet with an older woman. Satisfied with Mi-yeon, Do-joon wants to try something new, and eventually calls both Mi-yeon and So-jin home.

Manager Jeong falls in love at first sight with the president's wife who came to deliver the goods to the company. Bo-yeong takes her on a phonetic basis to make her her own woman, and after that, Bo-yeong begins to cross the river that she can't escape.

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Bo-na works part-time as a phone sex operator. She is the type of person who is reluctant to go out. She doesn't even bother when she listens to advice from people she doesn't know over the phone. She can't even be bothered to meet her boyfriend, Tommy. Most people have phone sex under the pretext of counseling, but Bo-na skillfully accepts it. It becomes a source of energy for various men. However, she is in a situation where she cannot even take a single step outside the house due to depression and panic disorder. Then one day, Bo-na was talking to a mysterious man who had come to counseling for the first time, and without realizing it, she became agitated because her conversation seemed comfortable and their situations seemed similar, but she is not ready to go out on her own yet as she is slowly falling into darkness. However, as time goes by, she gets to tell her own deep story to the man and gets the courage to go out.