Gian is being taught judo by his father and teaches it to Nobita, by beating him up. Doraemon produces a black belt which when worn makes anyone a judo expert, but anyone who touches Nobita gets thrown including Shizuka and their teacher.
| Creator | N/A |
|---|---|
| Actor | Nobuyo Oyama, Noriko Ohara, Sachiko Chijimatsu |
| Country | Japan |
| Production | Shin-Ei Animation |