The Cannon-Fodder Villain Becomes Everyone’s Favorite and Works Their Way to the Top

Reincarnated as the normal person in a cannon-fodder villain's family, I planned to use psychology to stop my whole family from courting death. But they mistook me for the ultimate lunatic, forcing me to become the villainous boss and lead the family down a curious path: supposedly destroying the world, but really building a home.

Since you're all determined to be villains, I'll make you the most efficient kind.