I Want You to Become an Immortal, Why Don't You Give Me Some Fun?

Reborn in another world, Yuyao became a local dog who was buried alive. Are you waiting to die as soon as you open your eyes? At a critical moment, the shuttle system between the two realms was activated, and he finally escaped back to Blue Star to save his life. Unexpectedly, he was regarded as a mad dog when he landed, and the red dot of the sniper rifle locked on his dog's head again... My life hangs on a thread, my mentality is shattered. What's even worse is that this broken system is not only vicious, but also criticizes him every day: "What's wrong with making you an immortal and having some fun for me?" Until he activated the system's trump card - [Supreme Dark Contract]. No showing up, no nurturing, no fuss. Everything is deedable. From then on, while others worked hard for hundreds of years and fought for treasures, he lay down on the Blue Star, and the demons from other worlds who made a secret contract automatically fought for him in the heavens. Others took great care of the beasts, but he casually made a pact with them, and the divine beasts and demon emperors lined up to give him a great opportunity. A humble native dog, relying on the two realms of freedom and the secret contract of all spirits, has become extremely humble and ridiculously strong. Don't show up, don't work hard, just enjoy. As for having fun with the system? Okay, just treat it as food for the dog king.