Ema is a 15-year-old high school student who lives with her family in a small apartment. She walks to and from school every day to pick up her younger brother, but it is often very windy, making the walk difficult. The document introduces The WindWalker, a clear protective barrier that shields users from the wind, allowing for easy movement even in extremely windy conditions. When Ema sees that it is windy outside, she uses her folded WindWalker, opening it up to walk to school protected from the wind. At school, she folds it back up and stores it in her backpack. At the end of the day, Ema and her brother walk home together safely inside the WindWalker.