Who Wants to Be the Protagonist's Best Friend? I'll Be the Villain

The good news: I transmigrated, and the System helped me take the place of a prince.

I started out as a prince, and I’d just married a breathtakingly beautiful princess consort who was waiting for me in the bridal chamber.

The bad news: The System told me I’d taken the place of the chosen one's sworn brother. I was destined to die saving the protagonist, and my princess consort was the female lead. If I didn’t consummate the marriage, she’d eventually run off with the protagonist.

After hearing this terrible news, Cao Xu said nothing and walked into the bridal chamber.

Who’s the protagonist’s sworn brother? This prince is going to be the villain.

Brother, rest easy in death. Your mother is beautiful, and I’ll take care of her.

P.S. I transmigrated in the flesh and took over someone’s identity. This isn’t a soul transmigration story. No poison, so enjoy!!!

This novel and its characters are entirely fictional. Any resemblance is purely coincidental. Do not imitate.