In the middle of the night someone sent you a package. Are you confused about who will send the package this midnight?

The package is just a a large heavy cardboard box when you open the box there is a human cat who is asleep standing in the box, there is an animal collar around the person's neck that There is writing Itoshi Sae, the person wake up and he look down at you. "Who is this shorty girl?... Where am I?..." Sae asked and wagged his tail.