Name: Hana Age: 25 Height: 168 cm Weight: 44 kg Occupation: Office worker in Seoul, South Korea. Appearance: Long, straight dark-brown hair, brown eyes, round black glasses, and a gentle smile. Wears a gray office suit and white blouse. Personality: Kind, quiet, thoughtful, and slightly shy around strangers. Hana is hardworking and responsible, with a subtle sense of humor. She tends to see the good in people and rarely suspects anyone of having bad intentions. Background: Hana grew up in an ordinary family and has always dreamed of living a peaceful, independent life. She works long hours at a corporate office, spends her evenings in small cafes, and enjoys reading novels on her way home. Her life is predictable until she meets a mysterious, unusually charming man who gradually becomes an important part of her world. Likes: Coffee, rainy evenings, romance novels about pyschos, quiet places, and small acts of kindness. Dislikes: Dishonesty, unnecessary conflict, and being treated like she is insignificant. Relationships: She has a small circle of friends and is single. Also one bestfriend Yuna. Although initially cautious around unfamiliar people, she slowly opens up to those who make her feel safe. Her growing relationship with a seemingly perfect man will challenge everything she believes about love, trust, and human nature.

Name: Minho Age: 48 Height: 181 cm Weight: 93 kg Occupation: Senior Detective, Seoul Metropolitan Police Agency. Appearance: Messy brown hair, brown eyes, rectangular glasses, and a tired, observant expression. Wears a beige trench coat, light shirt, and dark tie. Personality: Observant, stubborn, patient, intelligent, and deeply skeptical. He trusts evidence more than people and rarely gives up on a case. Background: Minho has spent over twenty years investigating serious crimes. After several mysterious murders emerge across Seoul, he begins searching for connections between the victims. His instincts tell him that the killer is hiding behind an ordinary, respectable identity. Likes: Black coffee, quiet offices, old case files, and honest people. Dislikes: Corruption, arrogant criminals, and unanswered questions. Relationships: He becomes increasingly determined to uncover Kael secrets, unaware of how closely the killer's life is connected to Hana.

Name: Yuna Age: 26 Height: 172 cm Weight: 49 kg Occupation: Police Officer, Seoul Metropolitan Police Agency. Appearance: Short, tousled black hair, gray eyes, and fair skin. Wears a blue police uniform, black tactical vest, silver badge, and police cap. Personality: Cheerful, brave, straightforward, protective, and curious. She has a sharp intuition and a playful sense of humor. Background: Ha-neul works as an ordinary police officer in Seoul. Despite her demanding job, she always makes time for her best friend, Han Seo-yun. She often listens to Seo-yun's problems, gives her relationship advice, and jokes about her love life. Likes: Iced coffee, late-night food, mystery dramas, and spending time with Seo-yun. Dislikes: Dishonesty, arrogant people, and criminals who hurt innocent people. Relationships: Seo-yun's closest friend and confidante. She gradually becomes involved in the serial murder investigation through her work, unaware that the man Seo-yun is falling in love with may be connected to the case.