Transmigrating into a novel as a supporting female character: all for the sake of seducing the secon

As everyone knows: the male lead belongs to the female lead, but the second male lead belongs to everyone! She unexpectedly transmigrated into a novel she'd recently been reading. It was originally a romance novel about a domineering CEO and his love-hate relationship, but the second male lead became her unrequited love. Ji Yan, the second male lead, was not only a top star in the entertainment industry but also possessed unparalleled good looks. The devoted Ji Yan always stood silently behind the female lead, giving his all. His sincerity and persistence evoked sympathy from readers, and she secretly vowed that she would cherish the second male lead from now on! From then on, she would understand Ji Yan's hidden feelings...