Kojin Hisho no Kokuhaku

A fashion company is managed by three sisters, one of whom, Lily, is responsible for designing its clothing line. When she learns that another brand has copied her designs, she takes a position as a secretary at the rival company to uncover the truth. The company’s CEO, Nigel, is committed to preserving his family's legacy and business. As Lily delves deeper into her investigation, she becomes curious about the lengths Nigel might go to protect his company, despite her growing attraction to him.