Kakeru Sorano is a shy university student who meets a girl at a freshman welcome party. Her name is Koharu Fuyutsuki. With graceful features and a gentle smile, she says cheerfully, “I can't see.” That was the beginning of everything. Though blind, Koharu carries herself with composure and lives positively, always looking forward with a bright attitude. As Kakeru becomes more curious about the differences between the world Koharu sees and the one he sees with his eyes, he finds himself wanting to help her fulfill her small dream: “Someday, I want to set off fireworks with my friends.” And so, he starts to wish to make that dream come true—together.