The Boy and the Beast

The Boy and the Beast (2015) is a action, adventure, animation directed by Mamoru Hosoda rated 7.9/10.

Kyuta, a boy living in Shibuya, and Kumatetsu, a lonesome beast from Jutengai, an imaginary world. One day, Kyuta forays into the imaginary world and, as he's looking for his way back, meets Kumatetsu who becomes his spirit guide. That encounter leads them to many adventures.