is an original video animation based in the works of Go Nagai. It was originally released from to in three episodes. Following the same concept, a oneshot manga by Nagai was released in 1992.
The OVA was also released in Italy under the name Il pazzo mondo di Go Nagai.
As Akira Fudo wakes up, he finds himself in a "chibi" form, which he thinks doesn't fit a hero such as himself. He is not the only one that has changed. Together with Ryo and Miki, they set out on a journey to restore their proper appearances and find out what caused this change. During their adventure they find several other characters from the world of Go Nagai, such as Mazinger Z, Dr. Hell, Baron Ashura, and others.
Several other characters from other series created by Nagai also appear in both the opening and ending of the episodes, although they do not have a role in the main story.
Source(s)
Besides the original VHS releases, all episodes were released in laserdisc also by Bandai.
In was released the CB Chara Nagai Go World Remaster Box by Bandai Visual (standard number BCBA-2916), a DVD box containing the episodes plus other extras.
The OVA was released in Italy in VHS format by Dynamic Italia in 2000, and on 3 DVD by Yamato Video in 2013. Discotek Media licensed the series for North America and released a complete Region A Blu-Ray on September 26th, 2023.
As part of the collection , published by Keibunsha, three photobooks based on the three episodes were released in 1991.
An oneshot manga titled was released on in the magazine Comic Sankei, published by Sankei Shinbunsha.