Honkai Star Rail’s version 3.4, launching July 2, 2025, introduces the ‘For the Sun is Set to Die’ chapter and a Fate/Stay Night crossover. Players can anticipate Phainon’s arrival, alongside Saber and Archer, with their iconic Ultimates. Firefly, Jingliu, and Blade will also return. A new region, Idis Elysiae, awaits exploration, while the Fate crossover event takes center stage.