After Escaping My Substitute Marriage, I Won the Tycoon's Heart

Her brother keeps her imprisoned and forces her to take her sister's place?

After her Nth escape attempt, she spends a night with a stranger, then leaves the next morning.

But when she later approaches him to discuss a business deal, the capital's top heir pins her against his office wall.

"You think you can sleep with me and just walk away?"

"Aren't you getting married?"

"The bride ran off. How am I supposed to get married now?"

She insists she won't take responsibility and refuses to admit anything.

But the capital's top heir won't stop pursuing her.

Later, when she's forced to marry her brother, he flies in more than a dozen planes overnight to abduct her from the wedding.

"Marry me. Let me take care of you, hmm?"

"..."

Only later does she learn that she was his first love all along.