YMMV / Mirai of the Future

• Base-Breaking Character: Kun is either realistically written and a good portrayal of a young child, or a whiny, annoying Bratty Half-Pint who ruins the movie with his constant tantrums. The latter is a common point of criticism towards the movie in some reviews.
• Questionable Casting: Hosoda cast an 18-20 year old woman as Kun and...needless to say, many find her voice for him to be scratchy, too old, or very off-putting.