About the title
Jack has two sisters, but he dreams of a brother he can play boys-only games with. And now his parents announce that the long-awaited brother is on the way. But he will be "special." Jack immediately decides that his family is getting a superhero, with whom they will save the world together. He'll have a long road ahead of him before he understands that people with an extra chromosome really do have a superpower that humanity needs — endless kindness.