The One to Infinity Anthliogy is a potential series that is both the easiest to make but also the hardest refine. Due to how simple the overarching plot is and the many elements that clash together, it is hard to actually make.
The One to Infinity Anthliogy is being designed to be a feelgood series about how the differences of people help solve the problems of others. In total, there are 16 universes, each with their own cultures and technologies. Some are more advanced than the others. Though to try and prevent some problems that would be presented in the series being outright resolved, some interactions between universes are intentionally pulled back so that others may shine.
The big reason why this series has difficulty being made (despite being conceived some weeks afer Really Real Animals) is due to the fact that there are many universes. And with how radically different each universe is, a lot is needing to be considered how each universe and its denizens interact with one another. The first original version was straight into the action, spoken mostly in past context with the end in the present, kicking off the series. However, it was deemed too short for an official first book. And while this original version had gotten pretty far, it's biggest flaw was that it required a lot of exposition dumping to introduce a new universe in the very same book before the interaction begins.
The current version is more character driven with the character in question simply interacting with the world and living in it. Through their eyes the world is revealed, along with the pushing of the plot. Each book contains 2 characters from 2 different worlds, who eventually come to meet one another and solve their problems (usually the 2nd character introduced). From there, the next book introduces a new character, which the characters from the previous book can help out. Though that doesn't mean every character from past iterations will be there. Just the ones necessary.
The universes are as follows. This is in development and will also introduce the characters in their respective links.