Romancing the Wrong Prince

After transmigrating into a book, Wren Wynn intended to latch onto the male lead, but mistakenly took the villainous Regent King, Kael Peyton, for the Crown Prince. She provoked him, only to stumble upon Kael Peyton's tragic past. By the time The System declared her mission target was wrong, Wren Wynn had already fallen deeply in love. In the end, the villain transforms into a loyal protector, doting on her.