New leaks about Honkai: Star Rail 2.3 have hinted at a potential update to the Simulated Universe and, with it, a memorable new boss fight. Simulated Universe is a weekly roguelike activity found in Herta Space Station, where players choose a World to challenge and go through randomized maps and enemies before facing a fixed boss at the end. After completing the tougher encounters, players get to farm Planar Ornaments, which are key items for every character they are, for instance, crucial for Aventurines build in Honkai: Star Rail.