How the Villain Invests in the Female Lead

He was once an ordinary young man living an ordinary life. But after what he did to his girlfriend, everyone called him a **heartless monster**. He treated her love like a toy, all while trying to suppress the monster hidden deep inside his heart—**Lustblood**. Then, his life came to an end when he was hit by Truck-kun. But death was only the beginning. He was reincarnated into the body of a useless noble from a powerful family, inheriting not only a new identity but also a mountain of problems left behind by his previous self. One day, he gained a wife—the legendary King of Knights, a woman with limitless potential who had been left crippled. A cheat-like opportunity appeared before him. If he healed her, he would gain countless skills and powerful techniques from her. There was just one problem. The annoying system he received was determined to turn him into the perfect gentleman and husband. Would he accept the system's mission and become the good man it wanted him to be? No. He would follow his own path. The path he was destined for. **[The path of a villain.]** *Author Note: If you enjoy legends related to King Arthur, this novel is for you. I am also a full-time author, so you can expect regular updates.*