The subseries originated from a video game released in 1995, which featured the six characters that had previously appeared in the 1995 short film 2112: The Birth of Doraemon.

In both the Original and Special manga series, cultural connection and historical legitimacy are highly noticed.

First published in December 1995, the series follows on the life and adventures of the Doraemons, with some of the chapters adapting the short film anime stories.

First published in December 1996, the series has a similar premise to the original The Doraemons, albeit they are more action-oriented with a much darker, more serious and dramatic tone.

The adventures involve many fictional (such as Arsene Lupin, Pinocchio, etc...) and real-life historical figures (Cleopatra, Nostradamus, etc...), as well as events that have happened in real life.