Nobita and his friends heard from Dekisugi that they started to correspond with the other person because of a letter attached to a balloon that was picked up in the garden. I heard that I got acquainted with an astronaut by participating in a space research circle with a junior high school student who is a correspondent, and everyone decided to fly a balloon with a letter.
Then ... Suneo receives a reply from a child in his neighbor's house, and Gian receives a letter from a teacher at some school who has corrected the wrong letter in red. And I was surprised to hear a reply from the foreign crown prince to Shizuka! The Crown Prince, who was visiting Japan, picked up Shizuka balloons and letters in the garden of the guesthouse.
Doraemon takes out the "long-distance balloon letter controller" for Nobita, who is depressed if only one person does not receive a reply. With this, you can control the whereabouts of the balloon while watching it on the monitor, and you can choose the opponent to play with.
When Nobita rewrites the letter with "Mohan Letter Pen", he tries to fly a balloon to the stadium so that the baseball player can pick it up ...! ??
