Plot[]
Nobita, who was told by her mom to write a thank-you letter to the uncle who gave her a picture book, has no choice but to write it. However, Doraemon, who was tired of the too short letter, took out the "Mohan Letter Pen".
As Doraemon told me, when I started writing a letter to my uncle again with the Mohan letter pen, I was surprised that the pen wrote the letter without permission! Nobita has completed a letter that is so good that mom is happy, and posts it to the mailbox comfortably.
Then, I found Shizuka Minamoto and Dekisugi who talked happily near the post. Nobita realized that the reason why Shizuka always seemed to have fun when talking to Dekisugi was because Dekisugi was smart and the story was interesting. I think of writing.
However, Nobita writes an adult letter without noticing that the age memory is out of sync. After that, I put a "super express stamp" that a post office person would come to pick up on a letter that was rewritten according to Nobita's age, and I got it delivered immediately ...!