The award is often called the Oscar of animated films.
The category is for films shown at fewer than 1,000 theaters in the United States.
“Mirai” tells the story of a 4-year-old boy who travels through time with his little sister from the future. The experience teaches him about the importance of family bonds.
“Mirai” is the first Japanese movie to win the award since Studio Ghibli’s “The Red Turtle” in 2017.
“Mirai” has also been nominated for an Academy Award for best animated feature film. The Oscar winners will be announced on February 24th.