After Becoming the Female Side Character in a Mary Sue Pampering Novel

My upcoming novel, "When an Otome Game Heroine Transmigrates into a Sweet Romance Novel's Supporting Heroine," is open for preorders. Please add it to your collection! Blurb below~

An Jiu transmigrated into a book, becoming a cannon-fodder supporting heroine and the male lead's ex-girlfriend.

The female lead of this book was clearly blessed with incredible luck. Her career flourished, and several powerful men were there to support her.

The wealthy heir, the male lead, treated her like a precious jewel. The domineering CEO, a supporting male character, doted on her. The incredibly talented Best Actor, another supporting male character, admired and was infatuated with her. The idol, a director's son with countless fans, was utterly smitten with her.

But one day, three of the powerful supporting male characters came down with a strange illness. Every night, they suffered splitting headaches and couldn't sleep at all.

Later, they discovered that their symptoms eased whenever they stayed with An Jiu.

As the powerful men's cure, An Jiu did her duty, kept to her place, and never crossed the line. All she wanted was to gather the good fortune around them and save her younger brother.

But why was their possessiveness becoming more and more obvious?!

The three supporting male characters who treated her as a cure were one thing, but what was going on with the male lead, who had started approaching her on his own?!

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