Suzume

Suzume is a normal high school girl living with her aunt in southern Japan. One day, she meets Souta, a young man looking for ruins in the area. Intrigued, she follows after him and finds a freestanding door in the ruins of a hot springs resort. But when she opens the door, she sees another world—one which eldritch, disaster-causing forces are all too eager to escape from. Yet, no sooner is the door closed then things get worse. Souta finds himself turned into a chair by a talking cat named Daijin—meaning it's now up to Suzume to travel across Japan, closing doors and preventing disasters as they chase Daijin to get Souta his body back.

Synopsis from Anime News Network