Robin and Aventurine are back, but this time they are different—both appear in swimsuit forms in Version 4.5. Many players initially assumed they were simply new outfits, only to discover from their attributes that they are entirely new playable characters.
According to the official “Variations on a Cosmic Tour” teasers released on June 30, Robin - Summeretto is a Wind character on the Remembrance Path, while Aventurine - Waveflair is a Quantum character on the Elation Path. They are expected to arrive in separate banner phases in late August.
Below, we will cover the 4.5 release date, banner schedule, detailed breakdowns of both characters, pull priorities, and Stellar Jade planning to help you prepare before the version arrives.
Honkai: Star Rail 4.5 Update Schedule
Honkai: Star Rail Version 4.5 is expected to launch in late August, following Version 4.4, which includes the second Fate collaboration.
HSR 4.5 Expected Release on August 25, 2026
Based on the game’s established update cadence and previous release patterns, Version 4.5 is expected to launch on August 25 for the North America server and August 26 for the Europe and Asia servers.
This estimate is based on Honkai: Star Rail’s standard six-week, or 42-day, update cycle and is calculated by projecting forward from Version 4.4. If the usual schedule continues, Version 4.5 is highly likely to arrive around this time.
The version is expected to be split into two phases: Robin - Summeretto in the first half and Aventurine - Waveflair in the second half. Based on previous banner schedules, the first half may run from August 25 to September 16, while the second half may run from September 16 to October 6. All dates are estimates.
Star Rail 4.5 Release Times for All Servers
The table below lists the estimated update times for each server, helping Trailblazers plan their pulls and gameplay around their own server schedule.
| Server | Estimated Update Time | Time Zone |
|---|---|---|
| North America | August 25, 22:00 | UTC-5 |
| Europe | August 26, 04:00 | UTC+1 |
| Asia | August 26, 11:00 | UTC+8 |
| Taiwan, Hong Kong, and Macao | August 26, 11:00 | UTC+8 |
Honkai: Star Rail 4.5 New Characters and Light Cones
Honkai: Star Rail Version 4.5 introduces two characters, both new SP forms of existing characters. Each is also expected to receive a signature Light Cone. The table below provides an overview, while more detailed character analysis follows later.
Their elements and Paths were confirmed in the official “Variations on a Cosmic Tour” teasers. However, the names and effects of their signature Light Cones have not yet been announced. The projected roles in the table are based on leaks and past release patterns and will be updated when official information becomes available.
| Image | Character | Element | Path | Signature Light Cone (Expected Role · Speculation) |
|---|---|---|---|---|
 | Robin - Summeretto | Wind | Remembrance | A Remembrance support Light Cone focused on team buffs and damage boosts |
 | Aventurine - Waveflair | Quantum | Elation | An Elation DPS Light Cone focused on Follow-up Attacks |
Robin - Summeretto shifts from the original Robin’s Harmony support role to the Remembrance Path. Her signature Light Cone is expected to focus on teamwide buffs and Remembrance mechanics, though its exact effects are still unconfirmed.
Aventurine - Waveflair shifts from the original Aventurine’s Preservation sustain role to Quantum Elation. His signature Light Cone is expected to favor Follow-up Attacks and offensive effects, but the final direction will depend on official information.
HSR 4.5 New Character: Robin - Summeretto (Wind Remembrance)
Robin - Summeretto is the new swimsuit SP character in the first half of the 4.5 banners and one of Honkai: Star Rail’s first swimsuit-form characters. The following sections cover leaked kit details, build ideas, and team compositions.
Robin - Summeretto Overview & Kit Leaks
★★★★★ | Remembrance | Wind
Robin - Summeretto changes from the original version’s Harmony support role to a Wind character on the Remembrance Path. As one of Honkai: Star Rail’s first swimsuit-form characters, she immediately drew significant attention after being revealed.
According to leaks, she can summon three small birds as memosprites. They record changes in the entire team’s HP and provide buffs based on those changes, leading players to compare her mechanics to Furina from Genshin Impact.
One major point of discussion is her role. Early leaks suggested that she could be a main DPS for Remembrance teams and potentially replace Castorice, while later leaks lean more toward her being a powerful support who is particularly well suited to supporting Castorice.
Robin - Summeretto Best Build
Since her final role has not yet been confirmed, the following build is a projection based on her expected role as a Remembrance support:
| Build Component | Expected Focus | Notes |
|---|---|---|
| Relic Set | Speed / Energy Regeneration Rate support build | Prioritize Speed for faster Ultimate rotations while maintaining strong buff uptime and cycling |
| Light Cone | Remembrance Path, team-buff focused (name unannounced) | Her signature Light Cone has not been officially announced but is expected to be designed around team buffs |
| Main Stats | Prioritize Speed and Energy Regeneration Rate, with some HP | Focus on taking more actions and restoring Energy, while HP provides baseline survivability |
As a projected support unit, her build should prioritize Speed and buffing effects rather than offensive stats. Her final build will depend on her released numbers.
Robin - Summeretto Team Comps
In terms of team building, she is expected to fit into the Remembrance archetype. Castorice may serve as the main DPS, Hyacine can fill the sustain slot, and other Remembrance characters such as Evernight may also work well with her. One point to watch is that both Robin - Summeretto and Evernight appear to lean toward buffing and sub-DPS roles, so their buffs may overlap in practice. The final team may require choosing between them or adjusting the lineup.
| Character | Artwork | Path · Element | Team Role | Role Details |
|---|---|---|---|---|
| Castorice |  | Remembrance · Quantum | Main DPS | The core damage dealer for Remembrance teams, relying on teamwide HP changes to charge her Ultimate and deal heavy damage |
| Robin - Summeretto | | Remembrance · Wind | Buff Support | Records teamwide HP changes and provides buffs, making her a projected new core buffer for the archetype (leak-based speculation) |
| Evernight |  | Remembrance · Ice | Sub-DPS / Buffer | Provides CRIT DMG and vulnerability buffs while also contributing Ice damage |
| Hyacine |  | Remembrance · Wind | Sustain | Provides teamwide healing and increases maximum HP to maintain the team’s survivability |
HSR 4.5 New Character: Aventurine - Waveflair (Quantum Elation)
Aventurine - Waveflair Overview & Kit Leaks
★★★★★ | Elation | Quantum
Aventurine - Waveflair shifts from the original Aventurine’s Preservation shield-and-sustain role to Quantum Elation. He is the new swimsuit SP character for the second half of the banners.
According to leaks, his kit retains gambling and probability-based mechanics, including a single-target Ultimate, multi-hit bouncing attacks, and Follow-up Attacks. He may also receive Action Advance when triggering “Jackpot.”
Notably, leaks suggest that although he belongs to the Elation Path, he may perform better outside Elation teams. His Eidolons may further enhance his Follow-up Attacks, positioning him as a high-frequency DPS unit.
Aventurine - Waveflair Best Build
The following build is based on the projected role of a Follow-up Attack DPS:
| Build Component | Expected Focus | Notes |
|---|---|---|
| Relic Set | CRIT / Follow-up Attack DMG build | Strengthen Follow-up Attack damage and improve the value gained from CRIT stats |
| Light Cone | Elation Path, Follow-up Attack DPS focused (name unannounced) | It has not been officially announced but is expected to revolve around Follow-up Attacks and probability mechanics |
| Main Stats | Prioritize CRIT Rate / CRIT DMG, with ATK | Improve CRIT returns for Follow-up Attacks, while ATK provides baseline scaling |
His build should focus on CRIT and Follow-up Attack damage. The exact stat targets will depend on his released kit values.
Aventurine - Waveflair Team Comps
If the leak that he performs better outside Elation teams proves accurate, he may fit into the Follow-up Attack archetype. The original Aventurine normally fills the sustain slot in Follow-up Attack teams, but his SP form becomes a DPS, leaving that position open for another healer or shielder. He may still be compatible with Elation teams alongside characters such as Silver Wolf Lv.999 and Sparxie, though leaks suggest those teams may offer lower returns than Follow-up Attack compositions.
| Character | Artwork | Path · Element | Team Role | Role Details |
|---|---|---|---|---|
| Feixiao |  | Hunt · Wind | Main DPS | The core of Follow-up Attack teams, relying on allies’ actions to build stacks and unleash Follow-up Attacks |
| Aventurine - Waveflair |  | Elation · Quantum | Sub-DPS | A high-frequency Follow-up Attack DPS unit (leak-based speculation) |
| Topaz |  | Hunt · Fire | Buffer | Marks enemies to increase Follow-up Attack damage |
| Sustain Slot (TBD) | — | Sustain | Add a healer or shielder to fill the open sustain slot |
Pulling Strategy: Who Should You Pull First?
Who you should pull first depends on what your account needs, not simply on which character is stronger. The two characters fill different roles and suit different types of players.
| Pull Robin - Summeretto First | Pull Aventurine - Waveflair First |
|---|---|
Best for players who already own the core of a Remembrance team but lack a dedicated buffer. She shifts from the original version’s Harmony support role to the Remembrance Path and is speculated to become a new core buffer for Remembrance teams. When paired with Castorice as the main DPS, she may provide valuable buffs. Together with Evernight as a sub-DPS and Hyacine as the sustain, they can form a full Remembrance lineup that amplifies team synergy. If you already pulled Castorice but feel that your team lacks buffs, she should be a higher priority. | Best for players already using the Follow-up Attack archetype and looking for a sub-DPS. He shifts from the original version’s Preservation shielding role to the Elation Path, moving from sustain to damage and becoming a projected high-frequency Follow-up Attack DPS. He can pair with Feixiao as the main DPS and Topaz as a buffer to add damage to a Follow-up Attack team. However, because his SP form no longer serves as the original sustain, you will need another healer or shielder. If you already have a well-built Follow-up Attack team and only need another source of damage, he is more worth considering. |
How Much Stellar Jade Do You Need to Pull in HSR 4.5?
Pulling costs can be estimated using the fixed pity system. One Warp costs 160 Stellar Jade. The table below shows the Stellar Jade needed for 4.5 characters.
| Pulling Goal | Worst-Case Pulls | Required Stellar Jade |
|---|---|---|
| One limited 5-star character | 180 pulls | 28,800 |
| One limited 5-star Light Cone | 160 pulls | 25,600 |
| Character + signature Light Cone | 340 pulls | 54,400 |
| Both characters (E0 each) | 360 pulls | 57,600 |
The table shows the worst-case scenario, where you lose every 50/50 before reaching pity. With average luck, a single 5-star character typically takes around 120 pulls, or roughly 19,200 Stellar Jade, so most players will not need the full 180 pulls.
Keep in mind that character and Light Cone pity are separate and do not carry over between banner types. If you want both characters and their Light Cones, the Stellar Jade cost rises quickly, so planning ahead is essential.
Version updates provide Stellar Jade through quests, events, and redemption codes, which can partially offset the cost. However, these rewards are usually not enough to cover max Eidolons or several characters.
Final Thoughts
HSR 4.5 is a version centered on swimsuit SP forms. Both characters are new forms of existing units and appear to be designed more as archetype upgrades than entirely new characters for account progression.
Robin - Summeretto is speculated to become a new core buffer for Remembrance teams, making her one to watch for Remembrance players. Aventurine - Waveflair, meanwhile, is expected to be a Follow-up Attack DPS and may be especially appealing to Follow-up Attack team players.
Since this version arrives directly after the Version 4.4 Fate collaboration, Stellar Jade spending may be especially demanding. Pull according to your needs and budget; if you do not play either archetype, saving your Stellar Jade is the safer choice.
FAQ
When Will Honkai: Star Rail 4.5 Be Released?
Version 4.5 is expected on August 25, 2026, in North America and August 26 in Europe and Asia. This follows the usual six-week update cycle, but wait for the Special Program for final dates.
Is Robin - Summeretto a New Character or a Skin?
Robin - Summeretto is a new playable 5-star character, not a skin. She is Robin’s swimsuit-themed SP form, with the Wind element and Remembrance Path, so pulling her requires Stellar Jade.
Who Is More Worth Pulling, Robin or Aventurine?
Pull Robin - Summeretto if you play a Remembrance team, especially with Castorice. Pull Aventurine - Waveflair if you need follow-up attack damage. Their final pull value depends on their released kits and your roster.
Which Rerun Character Should You Pull First?
No 4.5 rerun lineup has been officially confirmed. Prioritize a sustain if your account lacks one, then pull characters that complete your strongest team. Avoid pulling a rerun solely for potential future synergy.
HSR Related Guides
To plan for Version 4.5 in more detail or catch up on other content, you can also refer to the guides below.
Version 4.5 and Pulling
- In-Depth SP Aventurine Preview —— A standalone preview of the second-half featured character, with more detailed analysis of his mechanics and pull value.
- Claim Stellar Jade with the Latest Redemption Codes —— Regularly updated redemption codes to help you save more Stellar Jade before Version 4.5.
- Previous Version Banner Review —— Learn about the 4.4 banners and the Fate collaboration to understand how the versions connect.
Characters and Team Building
- Complete Team-Building Guide —— A full guide to popular archetypes, including Remembrance and Follow-up Attack teams.
- All Character Build Overview —— A complete build database covering each character’s Relics, Light Cones, and recommended stats.
Current Meta
- Character Tier List —— Current character rankings to help inform your pulling decisions.
