Yandairy-Chan of the Astral Clock Tower

Yandairy-Chan of the Astral Clock Tower is [|Yandairy-Chan]'s final form.

Backstory
Upon the creation of [Demiurge Icarus|The Demiurge Icarus], a cult known as the Church of Icarus was formed. They observed the statue of the Demiurge Icarus lift its sword and open its robes once a year. Out of its robes poured a great white light, in which the church began to throw sacrifices. Everything from food and wine, to animals, nothing seemed to close the statue's robes. As a last ditch effort, the leader of the cult threw in a human being as a sacrifice, which caused the statue to return to its original state.

Unknown to the church, however, was what happened to the humans they threw in. They would become bathed in a warm, white light, before dissipating, and becoming omnipotent. Their soul would search for a new vessel inside of the womb of a pregnant woman. They would then possess the human fetus, becoming what is known as an "[Being|Icarus Being]."

Among these sacrifices was a man named Bertram Jackson, a scientist that worked with the man who came to accidentally create the Demiurge Icarus. Bertram, after having attempted to study the statue, was seized by the cult and thrown into the statue unwillingly. The vessel that his soul found was none other than the fetus growing in Pip-Boy Aishi's womb. When the Icarus Being was born, it unknowingly assumed a new identity - the one of Seymour Aishi.

Profile
Yandairy-Chan of the Astral Clock Tower awakens within the final week of the Yandere Simulator: Repudiation DLC for Yandere Simulator. Upon Seymour accumulating enough pure hatred towards milk haters, she evolves into this final form, which Ayano must defeat to prevent the end of the world.