Synopsis

A baseball sailed through the window, shattering the glass. The owner, seeing Nobita nearby, immediately turned his anger on the boy, despite Gian’s clear involvement. He insisted Nobita confess to the act. Turning then to Doraemon, the owner questioned why the glass wasn't made of a more resilient material. Doraemon produced the Materials Quality Changing Machine, and Nobita, under instruction, altered the composition of several objects. Gian seized the device, but soon regretted his acquisitio