[GwangGong Apartment Complex] Weakness

Gu Do-Yeon, the daughter of the president of G Company, appears to have it all: a kind personality, widespread popularity, and immense wealth. In stark contrast, her stepsister Gu Yi-Seo seems plagued by misfortune and finds Do-Yeon’s perfection irritating. Convinced that no one can be truly flawless, Yi-Seo secretly hides in an office to uncover her stepsister's hidden flaws. There, she stumbles upon a side of Do-Yeon that is entirely different from the perfect image everyone knows.