When Nobita wanted to read the comic book of the 22th century, Doraemon secretly borrowed one from Sewashi's, including several comic's extras from the future.
- In the 2005 version, the scene that Nobita and Doraemon undresses Jun the doll is not shown to the audience due to tighter censorship.
- In the manga adaption and the 2017 anime adaption, there's a spin off that focusing the different robot cats that resembles Doraemon. It was called "The 2 Different Things ("Big Doraemon and Big Heroes" in Manga adpation, "Big Doraemon and Small Doraemon" in some dubs of the 1979 anime adaption of the episode).
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