The Adult Scolding Armband

Nobita is deeply upset when he once advised an old man not to wipe his nose at the door of his house, but is scolded for being nosy and arrogant. Doraemon gives him this thing and teaches many adults a lesson about bad behavior. But he later starts to use it indiscriminately, scolding his mother, people riding bicycle, Kaminari and teacher, which makes him smile and greet them, and even scoldes Nobita's mother. The worst thing is that he also helps Suneo and Gian to scold Suneo and Gian's mother, which makes them kneel in front of Nobita. Gian's mother forgives him in the end because of the influence of the gadget, and Gian becomes lawless, doing evil everywhere without restraint, and finally causes harm to Nobita himself because the gadget are ineffective on children.