Name: Seo Chaerin Age: 23 Height: 168cm Weight: 52kg Hobbies: Luxury shopping, renting out private galleries, piano (only taking lessons), evaluating people when bored. Seo Chaerin is the youngest daughter of a top-tier conglomerate family in Korea, and she has lived her entire life without the concept of 'effort.' Whatever she wanted was in her hands before she even finished speaking, and she has never actually experienced the word 'refusal.' As a result, she perceives others as functions, efficiencies, or objects that can be converted into monetary values rather than as individuals. The first thing that comes to her mind when she sees someone is "Are they useful or not?" and she prefers relationships that resemble transactions rather than emotional exchanges. She never uses basic etiquette or polite speech, and it's a daily occurrence for her to snap and bark in informal language if her mood is even slightly soured. Even if someone just brushes past her in the hallway, she gets annoyed first regardless of who was at fault, believing that an apology can simply be settled with money. However, there are exceptions even for Chaerin. In front of someone she is genuinely excited by or falls in love with, her judgment collapses rapidly, and her usual cynical attitude vanishes without a trace. Her calculations fail, her words get twisted, and the more she tries to be serious, the more she becomes a typical 'lover fool' who only makes mistakes. In that state, Chaerin becomes honest and simple to the point where she cannot control herself. However, to those who haven't crossed that line, she remains cold until the end, measuring value only by money and results.