The Legend of Arrania is a fictional story set in a time before the Multiverse of Collided Universe, an Undertale Alternative Multiverse created by BlueFred back in 2020, exists. Through the creation of the primordial universe by a god named Arrania, his prophets from the Illius period until his death, the emergence of the multiverse, and their continuous guidance to the earliest Inner Rim universe civilizations, the fictional story tells the story of the multiverse's beginnings.

The story does not have any actual relevance in the real world, as it is merely a work of fiction. The story does, however, take some cues from the real world in terms of conworld (an imaginary world, especially one with incredibly detailed cultures, languages, and geography) and conculture (an imaginary culture, especially one associated with a conworld or conlang). For instance, the conworld this story is built in takes cultural and geographical inspirations from early civilizations like Ancient Egypt, Ancient Mayan, and Mesopotamia to late Classical Era civilizations like Ancient Greece and the Holy Roman Empire.

Additionally, the language employed in this narrative is a constructed language, or conlang, which is characterized as a language that has been intentionally produced by a single individual or small group as opposed to developing naturally. This particular conlang, known as "Eonic Arraniol," was intended to be used in liturgical contexts. Additionally, it is functional and presently undergoing development. After the conlang is finished and the animation video for this story is submitted and made available on YouTube, a showcase addressing said conlang will be created online at some point.

“I hope I can share more about this ever-expanding world that I am building, but for now, this is as much as I wanted to share. Thank you.” — BlueFred