Featherine Augustus Aurora

Featherine Augustus Aurora (フェザリーヌ アウグストゥス アウローラ) is an extremely powerful witch who can freely rewrite reality. She appears in the last three episodes of as an observer and antagonist.

Background
Featherine is a godlike witch whose near-infinite life and nigh-omnipotence require her to wear a memory aid device which maintains her name, appearance, and personality across her existence. Featherine sees even high planes of existence such as Purgatorio as a script which she can modify at will.

Appearance
Featherine appears as a tall woman with long, dark purple hair stylized in a hime cut. She wears an elaborate pink dress with multicolored highlights along with a green sash adorned with a ceremonial medal. She has a silver device that floats around her head that functions as a memory aid device.

Personality
Featherine acts in accordance with her status as a being of nigh-omnipotence and can be condescending to the beings who speak to her. Featherine claims that she needs to constantly think or else she will perish.

Satokowashi-hen
Featherine first appears in in, wherein she appears to Satoko Houjou after Satoko interacts with an object in the Saiguden. She gifts her with the power to travel between fragments, similar to what Rika is able to do.

Trivia

 * Though there is no confirmed relationship between the two, Featherine Augustus Aurora is strongly connected to Hanyuu from.
 * Featherine and Hanyuu share a similar appearance, specifically Featherine's dress and memory aid resembles Hanyuu's miko outfit and horns.
 * When roughly translated, the kanji in Hanyuu's name (羽入) mean "feather" (羽) and "in" (入), which, when put together, essentially make "Featherine".
 * The katakana that begin "Augustus" and "Aurora", "Au" (アウ), are the same as Hanyuu's catchphrase "Auau" (あぅあぅ). Bernkastel references this by referring to Featherine as "Auaurora".
 * Lambdadelta mentions that Featherine's memory device was damaged, resulting in a change in appearance and personality. Similarly, one of Hanyuu's horns has a crack in it.
 * When Featherine first appears in, she is wearing an outfit similar to Hanyuu's typical outfit.