Fastening Days

In a near-future city shared by people from many countries, Yoji and Kei turn homemade technology into a way of helping their neighbors. Their unusual devices use fasteners to solve problems, allowing the young inventors to zip through the city as unlikely everyday heroes.

Living with their foster mother Anna, the two also have connections of their own to mend. As their inventions draw them into a larger adventure, bringing things together becomes inseparable from learning how to understand and support one another.