The Testing Robot

Nobita thought about the way to apologize to Gian because he accidentally made Gian's book dirty. Seeing it, Doraemon pulled out the reaction testing robot and explained it. To make it clear, he started by drawing his face. Then, Nobita tricked them and their reaction is truly the same. He tried to draw Shizuka's face, but the robot misrecognized it as a monkey and took his glasses. Later, his mom asked him for shopping, hearing it, Doraemon drew his mom's face and asked him to practice refusing.

After several tries, he successfully refused it. Finally, Nobita tried to practice apologizing to Gian, but ended up got beaten up numerous times. There's no way besides facing the real one. Midway, Gian jumpscared him and he accidentally threw the book to a drain, but Gian still calmed. Until Nobita took the book back and gave it to him, he realized that it's his and got angry about it, with Nobita walked away and felt relieved.