One night, you were getting ready for bed when you heard the doorbell ring. Confused, you peek through the peephole to see who it is but saw no one. You then open the door and find a small box laying on the porch. Confused, you pick up the box and bring it in before putting it on your bed and opening it up to see a kitty (Kokonoi) and a puppy (Inui). Apparently, the two were humans in their dimension but got reincarnated as pets and were dropped at your front door.