Oji Tensei ~Akuyaku Reijou no Kareinaru Seikatsu~

The infamous villainess, Chloe Demantoid, vanished at the execution grounds. On the brink of death, Chloe swore to live a righteous life if she were to be reborn. She was reincarnated into modern-day Japan as a middle-aged man with a body reeking of age, named Masamichi Kuroe...!