Ep. 235: Nobita Utilizes Sonic Oscillation Terror Machine to Exploit Gian's Singing
Aired on December 31, 1979
235
Doraemon introduces the Sonic Oscillation Terror Machine, a device that transforms loud noises into sound waves to eliminate household pests. Nobita recognizes the potential of this invention and invites Gian to his home, intending to use Gian's poor singing voice to activate the machine. Afterward, Nobita establishes an extermination business, recruiting Gian to visit their classmates' residences. They employ Gian's destructive vocal abilities to remove pests from various homes, effectively turning his singing into a commercial service for pest control.
Episodes
- Ep. 231 · Nobita uses Multiplication Liquid to preserve his chestnut bun
- Ep. 232 · The unwanted guest is ordered to leave the premises immediately
- Ep. 233 · Nobita constructs a handmade missile to exact revenge on Gian
- Ep. 234 · Creating a younger sibling
- Ep. 235 · Nobita Utilizes Sonic Oscillation Terror Machine to Exploit Gian's Singing