Shock! Immortal Lord, He Became the Pet of the Little Witch in the Devil World

The little demon girl in the demon world picked up a seriously injured sword cultivator, but she didn't expect it to be an immortal! Take it! Thousands of favors in one body! Want a magic weapon? Hire a craftsman to make it for you! Want a pill to increase your cultivation? I'll give it to you as a meal! However, this pet is a bit hateful, and even the little demon girl is hunted down to the end of the world! Until one day—— The Immortal Lord was resurrected with full blood, and pierced the sky with a sword. Tens of thousands of immortals bowed their heads, and the whole world trembled! But the Immortal Lord just broke into the devil world alone and captured the little demon girl alive: I will give you two choices, one is to marry you, the other is to marry me...