Phoenix Soars Back To The Sky

She was once a favored princess, but she was betrayed on the eve of her wedding and killed herself by self-immolation. While her betrayers live a happy life, she was reborn as the bullied and unloved youngest daughter of an aristocratic family. But now she will rise up like the phoenix and find revenge, taming magical beasts, cultivating her powers, and mastering potions and poisons, to control life and death itself! She swears that she will pay back those who betrayed and humiliated her a hundred-fold! (Source: Kuaikan, translated)