Dimensional Boundary Contact Prime Field No. 5

Appearance
As a perfect copy, her appearance was the same as the form Hades Izanami's vessel had taken.

History
She was an irregular among irregularities, created by an unnamed person based on Relius Clover's research, which entailed methods of creating vessels capable of containing even a "god", which Relius learned from Shūichirō Ayatsuki.

She was a copy of a certain "monster", so perfect that she could be regarded as the real thing.

Relius used her as a model for Saya, although as he never had the chance to fully analyze her, he is incapable of reproducing her, with many unknown factors remain regarding her. It's unknown what methods, techniques and processes were used in her creation.

Jin Kisaragi and Ragna the Bloodedge can be considered as her "children".

She was completely destroyed by Jubei.

Powers and abilities
As a perfect copy, she possesses the same abilities as her original. Among those mentioned were the ability to amplify seithr indefinitely, devouring human souls and taking their power as her own.

Trivia

 * Her original ended up being "consumed" by her own brother.