A long time ago, like a really long time ago, like some thousands of years ago?, in the past for a long time humans have lived in a world of magic called Tetra along with other magical beings. Anyway despite the constant turmoil and disasters that occurred to the human race, humanity formed a confederation and eventually reached an industrial revolution and started advancing their civilization for the better. However not too long after the beginning of a new era for them, something unexpected happened. An irregularity in space and time caused multiple dimensions to crash into each other and opened rifts between them. Such a situation caused humanity to be in a crisis for a short while before they managed to overcome their newfound problems and began exploring other dimensions.

Humanity quickly found that many of those other dimensions had different rules and laws than what theirs had and not too long after humanity was able to develop technology that allowed them to travel to other dimensions without the help of the rifts caused by the irregularity in space.

With the technology they developed, humanity eventually began colonizing other dimensions as well. It wasn't long until they were able to meet other races apart from them, not only that but some humans who traveled to other dimensions were even starting to show changes in their DNA. Along with the dimensions they traveled to, humanity also found new resources as well as powers. Such many changes caused conflict throughout humanity in itself but after tension and a short period of conflict, humanity as well as some of the races they discovered formed the Confederation of Unified Dimensions, the CD or CUD for short.

As well as allies, humanity encountered enemies. Part of the races they met refused to be allied to them or even wanted to conquer or destroy them. The Confederation was able to hold off and even win against most of it's opponents however they were far too many and a couple even tried to achieve dimensional traveling technology themselves or stealing it from the Confederation. Some of their enemies managed to succeed in fending off the Confederation and even less managed to acquire dimensional traveling technology to a small degree. Currently, despite having so many enemies, the Confederation is managing to fight back without being in too much pressure.