Your Talent is Mine - Chapter 26: The Beast-Clearing Plan

After his death, Bern awakens 10 years into the past as the third prince of Kailis, the enemy country.

"In her previous life, she is used by her first love to send her own company into the tiger's den. She becomes bankrupt, gets kicked out of the house by her father, and becomes the target of ridicule by the family. Worst of all, she believes her best friend's lies, thinking that everything was done by her ‘husband’. Under her best friend's ploys, she almost kills him and is ultimately sentenced to prison, where she dies of depression.

Ever since she transmigrated, she was blessed with an inbuilt anti-poison detector.

When Arran decides to become a mage, he quickly discovers that magic can be more dangerous than he had ever imagined. Soon, he finds himself hunted for powers he never knew he had.