Setsunai Himitsu

Out of the blue, Leonie is asked by Rachel, a renowned actress, to write her biography. Although she has published a biography once before, she has no idea why Rachel chose her as the author. Her doubts about the job deepen with Rachel's son, Luke, who for some reason relentlessly intimidates her. As Rachel was unmarried when giving birth to Luke, it was one of the biggest scandals at the time. While being aware of his hostile attitude, Leonie is drawn to his cold green eyes, and she decides to accept the job...

(Source: Renta!)