Awakened in the dark and got beaten by the main character, I possessed a dog, but it's too different from the original, so I'm confused (Associated Names)

I reincarnated as a cringeworthy villainous noble but got obsessed with magic lol. The villainous noble, Zenon Restinata, always loses to the goody-two-shoes protagonist of the original anime and ends up becoming a death-seeking dog by making a contract with a demon and going through a dark awakening (doom). He naturally looks down on commoners…