Honkai: Star Rail is gearing up for its next major update, as HoYoverse officially announced Version 4.3, titled “The Lethe Below the Living.” Set to launch on June 1, 2026, the update promises to push the game’s narrative forward while introducing new playable characters and limited-time content.
Alongside story developments, the update also brings fresh details about the highly anticipated collaboration with Fate/stay night: Unlimited Blade Works. With a mix of lore progression and gameplay additions, Version 4.3 is shaping up to be one of the game’s most content-packed updates yet.
Story Continues in Planarcadia With Major Character Focus
Version 4.3 will continue the ongoing storyline set in Planarcadia, placing the Trailblazer and Mortenax Blade at the center of the narrative. According to HoYoverse, the two characters will explore the mysterious “World in Canvas,” while facing threats tied to Lord Ravager Asat Pramad and the Aeon Voracity. These opposing forces add a layered conflict that builds toward a decisive turning point in Blade’s long-running storyline. The update is expected to dive deeper into his past while setting up a major shift in his fate.
Mortenax Blade’s journey has been one of the most intriguing arcs in the game, especially given his connection to the Stellaron Hunters. Known for waiting for his “death in the script,” his story has consistently revolved around inevitability and destiny. Version 4.3 appears ready to challenge that narrative, potentially redefining his role within the broader universe. This focus on character-driven storytelling continues to be one of Honkai: Star Rail’s strongest aspects.
New 5-Star Character and Banner Lineup Revealed
The update will introduce Mortenax Blade as a playable 5-star Fire-type character following the Path of Nihility. His combat style and lore significance make him one of the most anticipated additions to the roster. As a swordsman shaped by years of struggle and transformation, his gameplay is expected to reflect both his narrative depth and combat versatility. His debut marks a key highlight of the update’s first phase.
Alongside his release, the Phase 1 Warps will include a rerun of Yao Guang, giving players another chance to obtain the character. Phase 2 will then feature the return of Cyrene and Phainon as limited banners. This structured rollout ensures that both new and returning players have multiple opportunities to expand their teams. It also aligns with HoYoverse’s ongoing strategy of balancing new content with fan-favorite reruns.
Fate/Stay Night Collaboration Brings Free Characters
One of the biggest reveals tied to Version 4.3 is the continued rollout of the collaboration with Fate/stay night: Unlimited Blade Works. HoYoverse confirmed that the crossover will expand further in summer 2026 with new content updates and character introductions. Notably, players will have the chance to obtain either Gilgamesh or Archer for free simply by logging into the game during the collaboration period. This approach lowers the barrier for participation while driving strong engagement across the player base.
The reveal of the collaboration character cards has already generated excitement within the community, especially among fans of both franchises. While full details remain limited, HoYoverse has confirmed that more information will be shared through official channels in the coming weeks. The crossover represents one of the most ambitious collaborations in the game’s lifecycle so far. It also highlights the growing trend of major anime franchises intersecting with live-service games.
Official Trailer and What to Expect Next
Players can get a first look at Version 4.3 through the official trailer released by HoYoverse.
The trailer teases both the emotional stakes of the upcoming storyline and the scale of the new content being introduced. From cinematic story moments to glimpses of new abilities, it offers a preview of what players can expect when the update launches. It also reinforces the central themes of fate and conflict that define Blade’s arc.
With its combination of story progression, new characters, and high-profile collaborations, Version 4.3 is positioned as a major milestone for Honkai: Star Rail. The update not only expands the game’s universe but also deepens its character narratives in meaningful ways. As June 1 approaches, anticipation continues to build among players eager to experience the next chapter. For both longtime fans and newcomers, this update promises a significant step forward in the game’s evolving journey.
