Suzume integral

Suzume is a high school student living in a port city in Kyushu. One day, she encounters Sota, a boy who tells her he's looking for a door. Suzume decides to follow him and finds an old, solitary door in the middle of a ruined building. Drawn to it, she reaches out to touch it, and what her eyes see on the other side is... a scene that transcends time and space. A journey of closing doors begins, a journey that will lead them to confront the world head-on.