"Doraemon" is a series about a robotic cat named Doraemon, who travels back in time from the 22nd century to help a schoolboy named Nobita Nobi by his great-great-grandson. Doraemon will help improve Nobita's circumstances so that his descendants could enjoy a better future.
Doraemon also has a fourth-dimensional pocket on his body from which he can acquire various colorful, awesome and futuristic gadgets, tools and playthings from a future department store. Those gadgets help Nobita from unpleasant circumstances.
The Doraemon manga series was first published in December 1969 in six different magazines and it is still popular in Japan. Many kinds of Doraemon goods are sold.