No, Do You Need to Learn to Combine Similar Items When Controlling Beasts?

The soul travels through the world of beast control, and everyone determines their status by contracting with the beast. What Zao Xie Ge woke up to was an orange and white cat that was so frightened that the whole place was running around, making the whole town laugh out loud. No one knows that there is a strange system in his mind - similar items can be merged, and cats can be collected one by one. Keeping the waste cats away, it seems... Something is wrong?