I can see the titles of the Female Leads.

In a world brimming with regressors, reincarnators, and transmigrators, May is none of them. She’s just an ordinary, painfully ordinary, native of a romance-fantasy novel. No past-life memories, no transmigrator missions, no reincarnator powers. A 100% pure extra.

Yet May possesses one bizarre, unparalleled ability, she can see the titles of the novels the Female Leads come from. Not just brief titles, but massive, spoiler-filled ones that practically reveal the entire plot.

May kept that ability hidden and lived quietly. Until a romance-fantasy Female Lead named Seol Eun-chae possessed her beloved younger sister’s body.

Desperate to bring her sister back, May searches for a way, and learns a shocking truth from a chance encounter with a mysterious 'Master'.

"There is only one way to drive out a transmigrator. Steal the Male Lead she’s destined for."

...Hold on.
Seol Eun-chae’s male lead is WHO? The tyrant with a 0.000001% romance success rate, Rihaim Elivton?!

Countless Female Leads tried, and failed, to win him over, only to be cast out of their possessed bodies.

A mere extra, no regression, no cheat, no reincarnation, can she seduce Rihaim?

To reclaim her sister, May makes up her mind, she will shake the tyrant’s heart.