After Swapping the Beast Pills with My Sister

My father, for the sake of family gain, forcibly made Seraphina and me swallow the Shifter Elixir.

Seraphina became a plump, docile white rabbit, engineered for fertility.

I, on the other hand, transformed into a seductive, bewitching Siren.

After our transformations, my strong-willed sister was sent to the King's opulent court, reduced to nothing more than a breeding vessel.

Unable to navigate the treacherous intrigues, she was murdered during her pregnancy.

As for me, introverted and fragile, I was thrust into the city's notorious pleasure dens, a mere disposable plaything for wealthy…