The 22nd century is the period between 2100-2200 AD. Nobita's great-great-grandson, Sewashi Nobi, lives in this century. Doraemon came from the 22nd century using a Time Machine to Nobita's childhood period to help him.
- 2112- Production of male robotic cats and the introduction of the secret gadgets
- 2114- Production of female robotic cats and upgrading the function of the secret gadgets
- 2117- War between the robot cats and robot dogs.
- 2120- Production of Lulli, however considers a failure due to high horsepower.
The Birth of Characters
- Before 2109
- Unknown Lineage