Meow Upgrades Alone

After being reincarnated into this world, Haji turned into a cat. Originally, being a cat was quite pleasant, basking in the sun, licking its fur, occupying some space and stretching. Until, vortexes appeared all over the world. Human beings entered the vortex in batches, some returned triumphantly with their loot, and some never came back. These people are called hunters. The "awakening" of most hunters is completed after they reach adulthood and go to the Hunter Affairs Center. A very small number of them appear naturally and are called "revelators" As a kitten, Haji didn't care about this at first, but during a territorial grab, Sangbiao finally forced it into a desperate situation, and a strange thing appeared in front of it. System? Before Haji could react, a vortex appeared where they were. At the same time, a group of humans came here and stepped into it... From then on, Haji began his journey of upgrading as a cat. (PS: The author himself has been a cat, so he is not writing randomly.)