The Strongest Poison Doctor Already Has Her Heart Set on Someone

Everyone loves the female lead, yet every one of them abandons her when faced with a choice.

The female lead returns with a new face, but everything has changed.

She was deliberately raised to be useless from childhood, and only after enduring a life of hardship does she finally grow into her own.

(Face-changing, the female lead is skilled in both medicine and poison, and the male lead is the Prince Regent.)