I Became the Sword of the Banished Crown Prince

Diana wanted to become the empire's greatest blacksmith to avenge her father. After her death, she possessed the body of Diana Isla, the wife of an exiled crown prince. Actually, this worked out for the best. She intends to use her husband to continue her quest for revenge, but—. “If you can stab me with that sword, I’ll let you annul this marriage. For your information, my heart is right here.” This bastard. He's a complete lunatic.