My Brother Chases Dinosaurs(2019)

Overview:

As a child, Jack believed the tender lie his parents told him, that Gio was a special being with superpowers, as in a comic book. Now that he is about to go to high school, however, Jack no longer believes that his brother is a superhero, in fact, he is almost ashamed of him, especially since he met Arianna, the first love of his life.