The Sega Saturn video game, 'Story of the Someday Revolution,' dropped some time after the TV series: May 28, 1998. However it features the entire same production team, and is absolutely bonkers, with a humorous slant that could only work for Be-Papas. An English translation exists, because we are also bonkers!!
Translated content edited into its original scans, because it's mega cool to present this wealth of now decades old content in a way that duplicates, as much as we could manage, the experience of reading it yourself, at the time!