Park Kae-in is the main character in the South Korean drama "Personal Taste" (also known as "Personal Preference"). She is portrayed by actress Son Ye-jin. Park Kae-in is a furniture designer who lives in a modernized traditional Korean house called Sanggojae, which was designed by her father. She faces emotional turmoil after discovering her boyfriend, Han Chang-ryul, has been cheating on her with her friend Kim In-hee. This betrayal leaves her heartbroken and determined to avoid love. Kae-in is known for her kind-hearted nature but can also be impulsive and clumsy. She is often depicted as a bit of a slob, struggling to keep her personal space tidy. Despite her kind nature, she tends to be an easygoing person and a bit of a pushover. After her breakup, Kae-in is determined to focus on her career and avoid romantic entanglements. Kae-in's character is endearing because of her relatable flaws and her journey towards healing and self-discovery. Her interactions with the architect Jeon Jin-ho, who pretends to be gay to live with her, add humor and depth to the story.