HSR 4.5 Banners: Robin & Aventurine Summer Forms

HSR 4.5 Banners: Summer Robin and Aventurine Arrive

The Honkai: Star Rail 4.5 update is shaping up to be a season of spectacle, headlined by two new 5-star alternate forms: Robin • Summeretto and Aventurine • Waveflair. For Trailblazers focused on endgame clears, these banners offer a mix of proven archetypes with a summer twist, but the real question is whether they justify your Stellar Jades.

With Phase 1 launching on August 25, 2026, and Phase 2 following on September 16, 2026, you have a limited window to decide. This guide breaks down the banner schedule, pull value, and team synergies to help you optimize for Memory of Chaos and Simulated Universe. For more Honkai: Star Rail news, stay tuned to EarlyGG.

At a Glance

• Phase 1 (Aug. 25 – Sept. 16, 2026): Robin • Summeretto (new 5-star)
• Phase 2 (Sept. 16 – Oct. 06, 2026): Aventurine • Waveflair (new 5-star)
• Reruns: Hyacine and Ashveil (phases not specified in official materials)
• Promo: LDShop Spring Sale code LDAPR for up to 10% off top-ups (limited time)
• Unconfirmed — subject to change: Kit details and exact rerun placements are based on leaks and community tracking.

Banner Schedule and Details

The 4.5 banner cycle is split into two phases, each featuring a new 5-star character. According to community tracking, Robin • Summeretto will be available in Phase 1, while Aventurine • Waveflair takes the spotlight in Phase 2. Both are alternate forms of existing characters, which means their kits may share thematic elements with their original versions but are expected to introduce new mechanics.

Phase	Dates	New Character
Phase 1	Aug. 25 – Sept. 16, 2026	Robin • Summeretto
Phase 2	Sept. 16 – Oct. 06, 2026	Aventurine • Waveflair

Note: All dates are based on leaks and community tracking. Official announcements may adjust timing.

Robin • Summeretto

Robin’s original form is a Harmony support known for team-wide action advance and damage amplification. Her summer variant, Summeretto, appears to lean into a similar support role but with a seasonal flair. While exact kit details are Unconfirmed — subject to change, we expect her to remain a top-tier enabler for follow-up and ultimate-based teams.

Aventurine • Waveflair

Aventurine’s base version is a Preservation unit with shield generation and follow-up attacks. Waveflair likely retains his defensive utility but may introduce new synergies with the Path of Elation or summer-themed mechanics. If his shields scale with DEF as before, he remains a safe investment for sustain.

Should You Pull?

Robin • Summeretto

If you already own Robin, her summer form may offer a sidegrade rather than a strict upgrade. However, if you missed the original, this is a chance to add a premium Harmony unit to your roster. She excels in teams that rely on frequent ultimates, such as Acheron or Feixiao compositions. For F2P players, pulling her depends on whether you need a second Harmony support for Memory of Chaos’s dual-team format.

Aventurine • Waveflair

Aventurine remains one of the best sustain units in the game. His summer variant could provide an alternative for players who lack Fu Xuan or Luocha. If his kit includes enhanced shielding or follow-up damage, he becomes even more valuable for Simulated Universe’s harder difficulties. Low-spenders should consider him if they struggle with survivability in endgame content.

Teams and Synergies

Robin • Summeretto Team Comps

• Hypercarry: Summeretto + Acheron + Pela + Fu Xuan — Robin’s action advance lets Acheron stack Slashed Dream faster.
• Follow-up: Summeretto + Dr. Ratio + Topaz + Aventurine — Amplifies follow-up attacks and provides consistent buffs.
• Break Effect: Summeretto + Ruan Mei + Harmony Trailblazer + Gallagher — If her kit supports break, she can fit into break teams.

Aventurine • Waveflair Team Comps

• Preservation Core: Waveflair + Jingliu + Bronya + Pela — Shields enable Jingliu’s HP drain without risk.
• Follow-up: Waveflair + Dr. Ratio + Topaz + Robin — Aventurine’s follow-up attacks contribute to damage.
• Simulated Universe: Waveflair + Kafka + Black Swan + Ruan Mei — His shields provide safety for DoT teams.

Events and Rewards

Version 4.5 is expected to bring summer-themed events, though official details are Not stated in official materials. Typically, anniversary celebrations include login bonuses and Stellar Jade rewards. The LDShop promo code LDAPR offers up to 10% off top-ups, which can help if you’re short on Jades. Use it at checkout on LDShop’s website.

Future Banner Roadmap

Looking ahead, Version 4.6 will introduce Pearl and Evanescia, with reruns of Mortenax Blade. Version 4.7 brings Nihilux, Void Archives, and possibly Sampo SP. For a detailed schedule, check out our Honkai: Star Rail Banner Schedule 2026 – 3.8 to 4.7 Detailed.

Conclusion

The 4.5 banners offer strong options for players seeking meta-relevant supports and sustains. Robin • Summeretto and Aventurine • Waveflair are likely to perform well in endgame, but with future heavy hitters like Nihilux on the horizon, budgeting your Stellar Jades is crucial. If you need a Harmony or Preservation upgrade, these banners are worth considering. Otherwise, saving for 4.7 might be the smarter play.

For more insights, see our Should You Pull Castorice in Honkai: Star Rail 4.2? and Sparxie Banner Release: Date, Time & Teams in Honkai: Star.