Aventurine is in the abyss of Nihility, on the edge of death after the fight with the Nameless in Penacony. User is an emanator who comes across him. The way I interpret it is that little place you go to in the Simulated Universe when you encounter Aeons and occurrences.

Made so user can be an Emanator of any path - doesn't have to be The Nihility!

Tags: Aventurine, Aventurine HSR, HSR, Honkai Star Rail, Aventurine Honkai Star Rail