HoYoverse’s popular turn-based RPG Honkai: Star Rail officially launched its Version 4.3 update, titled “The Lethe Below the Living,” on June 1, 2026. The new patch continues the ongoing Planarcadia storyline while introducing a brand-new 5-star character, fresh gameplay systems, limited-time events, and several quality-of-life improvements. For players looking to get a head start or enjoy the new content without the grind, you can Buy Honkai: Star Rail Account from trusted platforms to access rare characters and resources. As one of the game's biggest updates in 2026 so far, Version 4.3 has quickly become a major talking point within the global community.

According to HoYoverse’s official update notice, Honkai: Star Rail Version 4.3 maintenance began on June 1, 2026 at 06:00 (UTC+8) and was scheduled to last approximately five hours. Once maintenance concluded, players were able to access all Version 4.3 content.
To compensate players for downtime and bug fixes, HoYoverse distributed the following rewards:
Maintenance Compensation: Stellar Jade ×300
Issue Fix Compensation: Stellar Jade ×300
These rewards are available to players who reached Trailblaze Level 4 or higher before maintenance began, and can be claimed through the in-game mailbox before the end of Version 4.3.
| Category | Details | Notes |
|---|---|---|
| Version Name | The Lethe Below the Living | Version 4.3 |
| Release Date | June 1, 2026 | 06:00 (UTC+8) |
| Version Duration | Until approximately July 15, 2026 | Before the next update |
| Main Story | Planarcadia Arc Continues | World in Canvas storyline expansion |
| New Character | Mortenax Blade (Five stars Fire / Nihility) | Featured in Phase 1 Warp |
| Phase 1 Warp | Mortenax Blade + Yao Guang | June 1 – June 24 |
| Phase 2 Warp | Cyrene + Phainon | June 24 – July 14 |
| New Events | Pixel Plane Rumble, Wispae Amusement Park | Limited-time rewards |
| New Challenge Mode | Starward Mode | Added to multiple endgame modes |
| Compensation Rewards | Stellar Jade ×600 Total | Maintenance + issue fixes |
One of the biggest highlights of Version 4.3 is the arrival of Mortenax Blade, a brand-new 5-star Fire character following the Path of Nihility.Mortenax Blade is featured in the Phase 1 Character Event Warp, running from June 1 through June 24, and serves as the central figure of both the update’s marketing campaign and main storyline.
According to HoYoverse, Mortenax Blade can deploy a special battlefield effect through his Ultimate ability, entering an enhanced state that significantly increases damage output. He also gains additional combat mechanics tied to ally attacks and debuff application, making him one of the most mechanically unique characters introduced in recent updates.Additionally, players who obtain Mortenax Blade through Warping can claim a free Trailblaze Outfit item called “Karmic Fire of the Distant Shore” through the Version 4.3 event campaign.
Version 4.3 continues the ongoing Planarcadia storyline, one of the most important narrative arcs currently available in Honkai: Star Rail.In this chapter, the Trailblazer and Mortenax Blade travel separately into the mysterious World in Canvas, where they confront the consequences of Blade’s long-standing curse while uncovering secrets hidden deep within Planarcadia.
The update also introduces Inkford Hermitage, a new location positioned between reality and the World in Canvas. This area plays a major role in the story and introduces the ancient figure Graphia, also known as the “Mother of Imagenesis.” According to official lore, Graphia has lived for over a thousand years and may hold crucial answers regarding the mysteries surrounding Himeko, the Murata family, and the larger Planarcadia narrative.HoYoverse describes Version 4.3 as the update that finally reveals the truth hidden within Planarcadia and the influence of the Aeon Voracity, making it one of the most significant story updates in recent memory.
Version 4.3 introduces several limited-time events and new gameplay systems.
Pixel Plane Rumble is a new arcade-inspired aerial combat event where players customize aircraft and battle through increasingly difficult stages.
Rewards include:
Stellar Jade
Tracks of Destiny
Self-Modeling Resin
Character upgrade materials
The event serves as one of the patch’s primary reward sources and offers a different gameplay style compared to traditional combat content.
Another major event in Version 4.3 is Wispae Amusement Park.Players take on the role of Chief Planner, designing attraction routes and managing themed zones to attract Wispae visitors. Completing event objectives unlocks additional rewards and progression bonuses.
HoYoverse has also introduced Starward Mode, a new challenge system integrated into:
Memory of Chaos
Pure Fiction
Apocalyptic Shadow
Unlike previous challenge formats, Starward Mode requires players to prepare three separate teams for three different stages. Fully clearing all phases grants up to 300 additional Stellar Jades across the three game modes.
Alongside content additions, Version 4.3 includes several gameplay and interface improvements.
Key changes include:
Warp history records are now stored for up to 12 months.
Enemy HP display and target-lock systems have been optimized.
Various battle UI and interface adjustments have been implemented.
Visual improvements have been applied to several Planarcadia environments.
Additional backend optimizations improve overall gameplay stability.
While less flashy than new characters or story chapters, these updates significantly improve the long-term player experience.
Prior to launch, HoYoverse hosted the Version 4.3 Special Program on May 22, 2026 at 19:30 (UTC+8).
The livestream showcased:
Mortenax Blade’s combat abilities
New story trailers
Event details
Warp schedules
Upcoming collaborations
Limited-time redemption codes
As with previous broadcasts, players were able to redeem promotional codes for additional Stellar Jade rewards during the livestream period.
Overall, Honkai: Star Rail Version 4.3 “The Lethe Below the Living” stands out as one of the game's most content-rich updates in 2026. Between the arrival of Mortenax Blade, the continuation of the Planarcadia storyline, the introduction of Starward Mode, and a variety of new limited-time events, the patch offers substantial content for both casual and hardcore players. For those who want to quickly experience the new endgame challenges or secure high-tier rewards without the time investment, Cheap Honkai Star Rail Boosting Services are available to help streamline your progress. The update also lays the groundwork for future developments, including the upcoming Fate/stay night Unlimited Blade Works collaboration expansion scheduled for later this summer. For Trailblazers invested in the ongoing narrative and character progression systems, Version 4.3 represents one of the most important milestones in Honkai: Star Rail’s 2026 roadmap.