HSR 4.5 Phase 1 Pull Guide｜Robin • Summeretto & Hyacine

1. Character Role Overview

Character	Path / Type	Role	Core Mechanics	Remembrance Value	General Value
Robin • Summeretto	Remembrance / Wind	Sub-DPS / Utility Support	Builds Vibes to enter Fever, providing team buffs and DEF Ignore. Her Ultimate offers 100% Action Advance + Energy restoration, while Summer Songbirds contribute additional damage.	High. Excellent for low-investment Remembrance teams and can compete for the flex support slot. Gains less value in fully invested teams.	Very High. Strong potential in high-action-frequency, Follow-Up, and other fast-rotation teams.
Hyacine	Remembrance / Wind	Sustain / Sub-DPS	Summons Little Ica for frequent healing, cleansing, and additional damage. Her Ultimate increases the team's Max HP and strongly synergizes with HP-loss mechanics.	Top Tier. One of the best sustain options for Castorice and HP-based Remembrance teams. E0 is already fully functional.	Medium. Her value drops outside HP and Remembrance teams, although HP-scaling units can still benefit from her kit.

In short:

Robin • Summeretto raises your team's ceiling, while Hyacine is the sustain engine that keeps HP-based Remembrance teams running smoothly.

Their pull priority depends heavily on how complete your Remembrance roster already is.

2. Robin • Summeretto vs. Hyacine: Who Should You Pull?

1. You Play Remembrance but Don't Have Hyacine

If you already own Castorice or Evernight but still do not have Hyacine, the recommendation is simple:

Pull E0S0 Hyacine first.

Hyacine provides far more than healing:

• Teamwide Max HP increase

• Frequent healing and cleanse

• Little Ica's additional damage

• HP-loss synergy

• Excellent synergy with Castorice

For Castorice teams, missing Hyacine affects not only survivability but also rotation consistency and HP-based team synergy.

If you only have enough Stellar Jade for one limited 5-star:

Hyacine E0S0 ＞ Robin • Summeretto E0S0

Complete the core team first, then consider Robin • Summeretto for additional offensive value.

2. Already Have Hyacine: What's Your Next Pull?

Current Team	Pull Priority	Why?
Low-Investment Remembrance: E0 Castorice, E0 Cyrene or lower investment	Robin • Summeretto E0S0 ＞ Hyacine Eidolons	Robin provides immediate Action Advance, Energy restoration, and team buffs, making her a strong upgrade for lower-investment teams.
Mid-Investment Remembrance: Castorice has key Eidolons, Hyacine E0	Hyacine E1/E2 or Robin E0 depending on your goal	Invest in Hyacine for stronger HP synergy and rotations, or pull Robin if you want more account-wide flexibility.
Premium Remembrance Team: Core units and key Eidolons already secured	Robin's priority drops — skipping is reasonable	A fully invested team already has plenty of buffs and strong rotations, so Robin's marginal upgrade becomes smaller.

One notable upgrade is Hyacine E2:

When an ally's HP decreases, their SPD increases by 30% for 2 turns.

This is especially easy to trigger in Castorice teams, where HP changes happen constantly, making rotations noticeably smoother.

For overall account value, however, adding E0 Robin • Summeretto is often more flexible than pushing deeper into Hyacine Eidolons.

3. If You Don't Play Remembrance

If you do not play Castorice, Evernight, or other Remembrance-focused teams, the difference is much clearer.

Robin • Summeretto: Worth considering.

Her kit is not completely locked to Remembrance teams.

Her Ultimate can provide 100% Action Advance and Energy restoration to a selected ally, while her other buffs reward teams that take frequent actions.

Robin is especially attractive if your account:

• Needs another premium support

• Uses high-action-frequency teams

• Plays Follow-Up or fast-rotation comps

• Wants a support with better cross-team flexibility

In these cases, E0S0 Robin • Summeretto is a solid pull.

Hyacine is different:

If you don't play HP-based or Remembrance teams, Hyacine is low priority.

Her biggest strengths come from Max HP buffs, HP-loss synergy, healing, and Remembrance interactions. If your existing sustain units already cover your other teams, there is little reason to pull her purely for general use.

3. Eidolon & Signature Light Cone Priority

1. Robin • Summeretto

For most F2P, Express Supply Pass, and low-spending players:

Get E0 first, then consider her Signature Light Cone, "Rise and Sing."

Robin • Summeretto is already mechanically complete at E0, with access to Vibes, Fever, Summer Songbirds, Action Advance, and Energy support.

Her Signature Light Cone, "Rise and Sing", further improves:

• Max HP

• Opening Action Advance

• Teamwide SPD

• Skill Point economy after Ultimate

That makes E0S1 a very comfortable stopping point, but the Signature Light Cone is not mandatory.

Her Eidolons mainly push her ceiling higher. E1 adds additional True DMG-related value, while later Eidolons further improve her buffs and Memosprite output.

For most players:

E0 ＞ Signature LC / Key Eidolons ＞ High Eidolons

Avoid draining your future Warp budget just to chase vertical investment.

2. Hyacine

Hyacine's biggest advantage is simple:

E0 already does everything a Remembrance sustain needs to do.

For most players, E0S0 is enough. There is no need to force additional Eidolons.

If you want more vertical investment:

E1 → E2 → Signature Light Cone / Further Eidolons

E1 further improves the team's Max HP and sustain during After Rain, making it especially valuable for HP-scaling DPS units such as Castorice.

E2 grants 30% SPD for 2 turns when an ally's HP decreases, greatly improving rotations in teams that constantly consume or lose HP.

Her Signature Light Cone, "Long May Rainbows Adorn the Sky", provides additional SPD and strong HP-loss / Memosprite synergy, but:

If your Stellar Jade is limited, Hyacine herself is far more important than her Signature Light Cone.

If you plan to add more Stellar Jade for Version 4.5 Phase 1, work out your pity and total pull budget first. HSR Top Up is best used to cover a planned pull budget rather than chasing extra Eidolons after your original goal is already complete. Decide whether you actually need Hyacine E0, Robin • Summeretto E0, a key Eidolon, or a Signature Light Cone before committing more resources.

4. Recommended Remembrance Teams

1. Castorice Main DPS｜Remembrance Team

+ + +

Castorice + Hyacine + Robin • Summeretto + Cyrene

Hyacine handles sustain and HP cycling, while Robin • Summeretto provides Action Advance, Energy support, DEF Ignore, and offensive buffs.

For lower-investment accounts, Robin can compete with Cyrene or Remembrance Trailblazer for the flex slot depending on your Eidolons and overall build quality.

Robin's 100% Action Advance does not always need to target Castorice. Use it based on Energy, turn order, and your current rotation.

2. Evernight Main DPS｜Remembrance Team

+ + +

Evernight + Hyacine + Robin • Summeretto + Cyrene

Evernight's frequent actions work well with Robin's Vibes mechanic, helping her reach and maintain Fever more efficiently.

Robin speeds up the team's rotation, Hyacine handles sustain and HP interactions, while Cyrene rounds out the Remembrance core.

The team's main strengths are:

Frequent Actions + Memosprite Damage + Action Advance + Energy Support + HP Cycling

Final Verdict

If you play Castorice or an HP-based Remembrance team but do not own Hyacine, prioritize Hyacine E0S0. She is more than a healer — she is a major part of the team's HP engine and rotation. If you already own Hyacine and run a low-investment Remembrance team, Robin • Summeretto E0S0 is a strong upgrade thanks to her Action Advance, Energy support, and offensive buffs. For fully invested premium Remembrance teams, Robin is not mandatory, since existing buffs can reduce her marginal value. If you do not play Remembrance at all, Robin • Summeretto has much better general pull value than Hyacine. F2P and low-spending players should generally stop around E0S0 or E0S1 rather than overinvesting in one banner.

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FAQ

Q1: Does Robin • Summeretto replace Hyacine in Remembrance teams?

No.

They fill completely different roles.

Hyacine provides healing, Max HP buffs, sustain, and HP-loss synergy, while Robin • Summeretto focuses on Action Advance, Energy restoration, offensive buffs, and Memosprite damage.

Robin is more likely to compete for a flex support slot than replace Hyacine.

Q2: Is E0 Hyacine enough? Do I need E2?

E0 is already fully functional.

E2 adds a powerful 30% SPD buff whenever an ally loses HP, which feels especially good in Castorice teams.

For comfortably clearing Memory of Chaos, Apocalyptic Shadow, and Pure Fiction, E0 is more than enough.

Consider E1/E2 mainly if you want smoother rotations, stronger vertical investment, or 0-cycle setups.

Q3: I only have enough Stellar Jade for one 5-star. Robin • Summeretto or Hyacine?

It depends on your account.

Playing Castorice / HP Remembrance without Hyacine: pull Hyacine.

Not playing Remembrance and want a flexible support: pull Robin • Summeretto.

If you already have Hyacine, Robin becomes much easier to recommend.

Q4: Is it still worth building a Remembrance team from scratch?

The archetype is still strong, but it can be expensive to build.

If you already own Castorice or Evernight, Version 4.5 Phase 1 is a good opportunity to add Hyacine or Robin • Summeretto.

If you own none of the key Remembrance units, avoid forcing an entire premium team from zero just because of one banner. Secure your main DPS first, then build the supporting core around them.