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
Based on the current six-week update cycle, Honkai: Star Rail Version 4.5 is expected to launch on August 25, 2026, in North America and August 26 in Europe and Asia. Robin • Summeretto is expected to appear in Phase 1, followed by Aventurine • Waveflair in Phase 2.
HSR 4.5 Banner Schedule at a Glance
The schedule below is projected from the current update cycle and pre-release information. The exact dates, banner order, signature Light Cones, and rerun characters may still change until HoYoverse publishes the official Version 4.5 announcement.
| Banner Phase | Expected Dates | Featured 5-Star Character | Element | Path | Signature Light Cone | Reruns |
|---|---|---|---|---|---|---|
| Phase 1 | Aug. 25/26–Sept. 16, 2026 |  Robin • Summeretto | Wind | Remembrance | Rise and Sing (Leaked) | Not yet confirmed |
| Phase 2 | Sept. 16–Oct. 6, 2026 |  Aventurine • Waveflair | Quantum | Elation | Summer Rides the Surf (Leaked) | Not yet confirmed |
The two new character forms have been revealed, but their exact banner times, rerun characters, four-star rate-ups, and final signature Light Cone details have not yet been fully confirmed.
HSR 4.5 Expected Release Times by Region
Honkai: Star Rail version updates normally go live worldwide at the same moment. However, the displayed date and time vary by region because of time-zone differences. The times below are estimates and should be checked again once the official Version 4.5 maintenance notice is released.
| Region | Estimated Release Time | Reference Time Zone |
|---|---|---|
| Coordinated Universal Time | August 26, 2026, at 03:00 | UTC |
| North America — West Coast | August 25, 2026, at 20:00 | PDT (UTC-7) |
| North America — East Coast | August 25, 2026, at 23:00 | EDT (UTC-4) |
| United Kingdom | August 26, 2026, at 04:00 | BST (UTC+1) |
| Central Europe | August 26, 2026, at 05:00 | CEST (UTC+2) |
| China, Taiwan, Hong Kong, and Singapore | August 26, 2026, at 11:00 | UTC+8 |
| Japan and South Korea | August 26, 2026, at 12:00 | JST/KST (UTC+9) |
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. The names and effects of their signature Light Cones have not been officially announced, but leaks have since surfaced with expected names and effect directions. The Light Cone names and projected roles in the table below are leak-based and will be updated when official information becomes available.
Image | Character | Element | Path | Light Cone Image | Leaked Name · Expected Role |
|---|---|---|---|---|---|
| Robin - Summeretto | Wind | Remembrance |  | Rise and Sing — a Remembrance support Light Cone focused on Max HP, action advance, Skill Point recovery, and team Speed |
| Aventurine - Waveflair | Quantum | Elation |  | Summer Rides the Surf — an Elation DPS Light Cone focused on CRIT Rate, Speed, Elation DMG, and Skill Point support |
Robin - Summeretto shifts from the original Robin’s Harmony support role to the Remembrance Path. Her leaked signature Light Cone, Rise and Sing, is expected to provide support-oriented effects tied to Max HP, action advance, Skill Point recovery, and team Speed, though its exact numbers are still unconfirmed.
Aventurine - Waveflair shifts from the original Aventurine’s Preservation sustain role to Quantum Elation. His leaked signature Light Cone, Summer Rides the Surf, is expected to favor offensive effects such as CRIT Rate, Speed, Elation DMG, and Skill Point recovery, 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 | Rise and Sing (leaked name) — Remembrance Path, team-buff focused | Her signature Light Cone has not been officially announced; the name Rise and Sing is leak-based and is expected to be designed around team buffs, Max HP, action advance, Skill Point recovery, and team Speed |
| Main Stats | Prioritize Speed and Energy Regeneration Rate, with some HP | Focus on taking more actions and restoring Energy, while HP provides baseline survivability and scales with her leaked HP-based mechanics |
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.
Details for characters other than Robin - Summeretto are also leak-based and should be verified against official information.
| 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 (leak-based; verify with official info) |
| Hyacine |  | Remembrance · Wind | Sustain | Provides teamwide healing and increases maximum HP to maintain the team’s survivability (leak-based; verify with official info) |
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 builds Fervor (Heat) and Punchline as allies or he attack enemies, triggering automatic and enhanced Elation Skills, and may receive Action Advance to the Aha Instant when triggering “Jackpot.”
Notably, leaks suggest that although he belongs to the Elation Path, he may perform better outside Elation teams.
When another Elation character is present, he gains an additional Elation DMG increase; when he is the only Elation character, he instead generates Punchline and Certified Banger whenever an ally attacks, making him usable in both Elation and Follow-up Attack 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 | Summer Rides the Surf (leaked name) — Elation Path, Follow-up Attack DPS focused | His signature Light Cone has not been officially announced; the name Summer Rides the Surf is leak-based and is expected to revolve around Follow-up Attacks and probability mechanics, providing CRIT Rate, Speed, Elation DMG, and Skill Point support |
| Main Stats | Prioritize CRIT Rate / CRIT DMG, with ATK | Improve CRIT returns for Follow-up Attacks, while ATK provides baseline scaling; leaks also list 160 SPD as an early Speed target |
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.
Details for characters other than Aventurine - Waveflair reflect their current live kits, but the synergy projections are leak-based and should be verified against official information.
| 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.
