Villain: My Sister Is a Brother-Obsessed Sister

Also known as: From Today On, I'll Be the Ultimate Sis-Con; Me, the Nobody Male Side Character, Make My Debut in the Center as the Big Bad; Urban Novel: My Sister Discovers I'm the Mastermind Behind the Scenes.

He transmigrates into an urban novel as a male side character who barely exists.

His only standout feature is a beautiful, gentle older sister who dotes on her little brother.

The problem is, in the original story, he's just a tool the protagonist uses to win his sister over.

Fortunately, he activates the Destiny Villain System.

By changing the story, he can earn huge rewards. From then on, he becomes the mastermind behind the scenes, manipulating protagonists from every corner with ease...

P.S. This is a dark story, with no saintly protagonist. If that's not your thing, don't read it.

This novel and its characters are entirely fictional. Any resemblance to actual people or events is purely coincidental. Do not imitate.