Honkai Star Rail Robin Summeretto & Aventurine Waveflair Guide | August 2026

If your Stellar Jade is short of a Phase 1 guarantee, Honkai: Star Rail Oneiric Shard top-up on BitTopup delivers by UID. No password.

4.5 Banner Schedule and E0S1 Snapshot

Updated on 2026-08-13: Beta v5 E0S1 combat notes, Phase 1/2 windows, Special Program on 14 August.

Version 4.5 is titled To Roll the Stars in Astropolis. The Special Program airs 14 August 2026 at 19:30 UTC+8 on the official Honkai: Star Rail YouTube and Twitch channels. HoYoverse drops three livestream codes worth 300 Stellar Jade. They expire in about 24 hours. Redeem them at hsr.hoyoverse.com/gift.

E0S1 verdict from 4.5 beta v5: both units clear high-end Swarm Nightmare and Penacony bosses without Eidolons. Signature Light Cones are the first upgrade. Stop at E0S1 unless you already planned E1.

For a Phase 1 vs Phase 2 wallet split, use the Robin Summeretto vs Aventurine Waveflair pull guide.

Robin Summeretto Kit (Wind Remembrance)

Original Robin is Physical Harmony. Summeretto is a different character: HP-scaling Remembrance support who summons three memosprites, the Summer Songbirds (Bessie, Drummie, Paddie).

How the loop works:

• Ally attacks, heals, or shields give her Vibes (cap 50 at E0).

• 6 Vibes summons Drummie. 12 Vibes summons Paddie.

• All three Songbirds on field: she enters Fever, drops a Zone, and stops taking turns until Fever ends.

• Inside the Zone, ally damage ignores 15% DEF + 0.5% per remaining Vibe (up to 40% at E0).

• Ultimate grants 100% Action Advance and 20% Energy to one ally, then tags them Special Guest. That ally’s attacks feed extra Vibes.

Skill Summer Strums the Soul puts the Songbirds on stage. In combat they show up as a guitar bird, a sailor bird, and a DJ bird. Time Fever for your carry’s burst window.

Robin Summeretto build

E1 raises max Vibes and generation. E2 adds True DMG from recorded ally damage. E6 is the whale spike (RES PEN + Fever CRIT DMG). Most accounts stop at S1, then E1 if jade remains.

Aventurine Waveflair Kit (Quantum Elation)

Original Aventurine is Preservation. Waveflair is Quantum Elation DPS. He converts teammate attacks into Fervor and Punchline, then dumps them through Elation Skills during Aha Instant.

Trace Party of Euphoria wants 160+ SPD (Elation +30%, then +1% per extra SPD). Revel in Surging Waves gives +100% Elation if another Elation unit is on the team; if he is the only Elation unit, ally attacks feed Certified Banger and Aha SPD instead.

Aha Instant is the dump window: Aha mask, Punchline count, cards and coins. In v5 E0S1 fights the counter sits around 20 during the dump. Sequences climb from about 400k into the 1M to 3M range when Robin’s Fever and extra teammate hits stack.

Aventurine Waveflair build

E1 (Vacation At Stake) is the first vertical spike: 24% All-Type RES PEN and extra Cheers! procs. E2 raises the Fervor cap to 50. E6 locks All in! after two Ultimates. Stop at E0S1 unless you main him; then E1S1.

Best Teams for the 4.5 Duo

The two kits share one demand: the rest of the team must attack a lot. Robin farms Vibes. Waveflair farms Fervor. Slow, one-and-done rotations starve both.

Huohuo is the sustain on the v5 E0S1 clears. SPD around 170 turns her extra actions into Vibe fuel. Hyacine is the Remembrance-side alternative if you already built her for Castorice cores. Check older cores against the Honkai Star Rail team guide before you retire a working 4.2 squad.

How to Play E0S1 Robin Summeretto and Aventurine Waveflair

1. Step 1: Open with Robin’s Skill to get Bessie out. Hold the Ultimate until your carry is about to act, then tag them Special Guest.

2. Step 2: Let the team attack. Skip Fever on turn 1. Stack 12+ Vibes, then overlap Fever with the damage window.

3. Step 3: On Waveflair, Skill for Fervor, Ultimate for SPD and Punchline, then dump Cheers! / All in! during Aha Instant. Keep him at 160+ SPD so Party of Euphoria stays on.

4. Step 4: Farm shared Remembrance and Elation mats during 4.5 events so Day-1 traces are not stuck at 6. Cross-check free jade on the Honkai Star Rail codes list before you buy shards.

Beta v5 numbers may change before 25 August. Recheck Trace text and multipliers after the Special Program.

How to Get More Stellar Jade for 4.5

• Redeem standing codes and the 14 August livestream set the hour they appear. Codes die in a day.

• Clear Memory of Chaos, Pure Fiction, and Apocalyptic Shadow on reset. The 4.5 roster is built for those modes.

• Express Supply Pass first if you log in daily. Direct Oneiric Shard packs if you need a guarantee this week.

• UID top-up on BitTopup Honkai: Star Rail: pick the pack, enter UID + server, pay, then confirm in-game. Never hand over a password. Full steps sit in the Oneiric Shards buying guide.

Pity math: 80 pulls ≈ 12,800 Stellar Jade. A 50/50 loss plus guarantee is ~160 pulls. Phase 1 Robin plus Phase 2 Waveflair plus both signatures is a whale plan. Most accounts pick one E0S1.

FAQ

Are Robin Summeretto and Aventurine Waveflair skins?

No. They are separate 5-star characters with new Paths, elements, and banners. Original Robin (Physical Harmony) and original Aventurine (Imaginary Preservation) stay on your account.

Should you pull Robin Summeretto or Aventurine Waveflair first?

Pull Robin Summeretto in Phase 1 if you need a flex support who slots into Remembrance, follow-up, and action-heavy teams. Pull Aventurine Waveflair in Phase 2 if you want a Quantum Elation carry and already have frequent attackers. See the pull priority table if jade covers only one.

Is E0S1 enough for endgame?

Yes in 4.5 beta v5. E0S1 Robin plus E0S1 Waveflair, Blade, and Huohuo push Swarm Nightmare and Penacony bosses into million-damage sequences. E1 on either unit is optional. Compare that floor against the live Honkai Star Rail tier list after 4.5 launches.

Do they replace original Robin and Aventurine?

Summeretto does not copy Harmony Robin’s concert buff. Waveflair does not copy Preservation Aventurine’s shields. Keep the originals if those roles still carry your second side. The SP versions fill different seats.

When is the 4.5 Special Program?

14 August 2026, 19:30 UTC+8. Watch official YouTube or Twitch. Redeem the three codes the hour they appear, then come back here after HoYoverse locks banner times.

Conclusion

Honkai Star Rail Robin Summeretto and Aventurine Waveflair are the 4.5 headline: a Wind Remembrance Fever engine and a Quantum Elation Fervor carry, both functional at E0S1. Bookmark this guide for the live multipliers. If you are buying the Phase 1 guarantee, top up Oneiric Shards on BitTopup with UID only.