Mwynn is a character in the Fabula Nova Crystallis: Final Fantasy mythology. She is briefly alluded to in Final Fantasy XIII-2, where a Fragment discovered in the Void Beyond is named "Mwynn's Tenderness".
Story
The Fabula Nova Crystallis mythology was revealed in a video shown at Square Enix 1st Production Department Premiere event on January 18, 2011. The universe of the Fabula Nova Crystallis series is divided in two — the Mortal World, the realm of the living, and the Unseen World, the realm of the dead. Mwynn is the god Bhunivelze's character, who was killed by her son who wanted to take full control of the Mortal World for himself. As a result, Mwynn was sent into the Unseen World.
Despite achieving his goal of total control of the Mortal World, Bhunivelze became troubled. He believed that Mwynn had placed a curse on the realm of the living so that it would one day be destroyed. In order to put a stop to the curse Bhunivelze sought to destroy his mother once and for all, but was unable to reach the Unseen World without giving up control of the Mortal World. To find the entrance to the realm of the dead, Bhunivelze created the fal'Cie Pulse, tasked with searching the world for the door to the Unseen World.
To assist Pulse, Bhunivelze created the fal'Cie Etro, but became distraught to discover that he had unknowingly created her in the likeness of Mwynn and as a result, Bhunivelze gave Etro no powers. To replace Etro, Bhunivelze created the fal'Cie Lindzei, tasked with protecting the world and Bhunivelze himself. With the fal'Cie at work, Bhunivelze put himself into a deep crystal sleep, to be awoken only when the door to the Unseen World was found.
Etro became distressed over her lack of power and purpose in the world. Out of despair, Etro killed herself and disappeared from the Mortal World entering the Unseen World. In the Unseen World, Etro discovered Mwynn being consumed by an energy mass known as chaos, a byproduct of Bhunivelze's creation of the fal'Cie. With her last breath, Mwynn tasked Etro with protecting the balance of the universe, for if the balance between the Visible and Unseen Worlds was to be disrupted, the universe itself would collapse. Mwynn told Etro she must protect the world balance, before being fully consumed by chaos.
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