Summeretto Guide: Kit, Ascension, and Eidolons in HSR

With Honkai: Star Rail version 4.5 on the horizon, the upcoming 5-Star Wind character Summeretto (also known as Robin Summeretto) has caught the attention of the community. Based on reliable beta leaks, Summeretto is a Wind unit of The Remembrance path, and her unique kit revolves around a memosprite named Summer Songbirds. While everything here is drawn from pre-release data — and subject to change — this guide will help you prepare everything you need to raise her on day one.

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Summeretto at a Glance

• Rarity: 5-Star
• Element: Wind
• Path: The Remembrance
• Role: Support / Sub-DPS (with memosprite synergy)
• Key Mechanic: Vibes – a stacking resource that unlocks powerful team-wide buffs and damage boosts

Summeretto Kit Summary

Unconfirmed – based on beta data from honeyhunterworld and subject to change.

Summeretto’s playstyle revolves around her memosprite, Summer Songbirds Bessie, and a unique resource called Vibes. Accumulating Vibes from ally actions lets her evolve her memosprite and enter a powerful Fever state.

Basic Attack

Soundwaves, Tuning the Ocean Breeze – Deals Wind damage equal to 25% of Summeretto’s Max HP to a single enemy.

Skill

Midsummer Is the Musician of the Soul – Summons the memosprite Summer Songbirds Bessie. If already on the field, restores 50% of its Max HP and gains 6 Vibes.

Ultimate

Leap into the Blue Ocean Rhapsody – Advances an ally’s action by 100% and regenerates 12% of their Max Energy. That ally gains the Special Guest effect, generating Vibes when they attack. Cannot be used on Summeretto or her memosprite.

Talent

Cruising the Boundless Skies – The memosprite’s Max HP equals 70% of Summeretto’s Max HP and its Speed equals 180% of Summeretto’s. Ally attacks, heals, or shields generate 1 Vibes (max 50). At 6+ Vibes, summons Summer Songbirds Drummie; at 12+, summons Summer Songbirds Paddie. When all three memosprites are on field, Summeretto enters Fever state, dispels all Crowd Control debuffs, and deploys a Zone that grants allies Defense ignore (10% + 0.5% per Vibes). While in Fever, Summeretto and her memosprite are immune to CC and Summeretto cannot take turns.

Technique

We Form A Melody – Starts the next battle with 6 Vibes and grants all allies a 30% damage boost for 2 turns.

Bonus Traces

• Deviated Chord: When an ally generates Vibes for Summeretto, if their ATK is higher, increase their ATK based on Summeretto’s Max HP; otherwise, boost their Crit Damage. Lasts 2 turns.
• Improvised Blues: When Summeretto or her memosprite receive a heal or shield from teammates, gain up to 12 Groove stacks. First Groove stack regenerates Energy.
• Reconstructed Harmony: Increases Crit Rate by 50% for Summeretto and her memosprite.

Summeretto Ascension Materials

To fully ascend Summeretto, you’ll need the following materials. These are based on the latest beta leaks and may change.

Ascension Level	Materials	Credit Cost	Reward
20	5 Dream Collection Component	4,000	1 regular Star Rail Pass
30	10 Dream Collection Component	8,000	—
40	6 Dream Flow Valve, 3 Charred Bud of Twilight	16,000	1 regular Star Rail Pass
50	9 Dream Flow Valve, 7 Charred Bud of Twilight	40,000	—
60	6 Dream Making Engine, 20 Charred Bud of Twilight	80,000	1 regular Star Rail Pass
70	9 Dream Making Engine, 35 Charred Bud of Twilight	160,000	—

Total Ascension Materials:
– 15 Dream Collection Component
– 15 Dream Flow Valve
– 15 Dream Making Engine
– 65 Charred Bud of Twilight
– 308,000 Credits

Summeretto Trace Materials

Leveling her Traces requires a substantial investment. Plan your stamina accordingly.

Trace Material	Total Needed
Tracks of Destiny	8
High Hopes of the Falsely Enlightened	12
Bija of Consciousness	18
Dream Collection Component	41
Dream Flow Valve	56
Dream Making Engine	58
Seedling of Manas	69
Flower of Alaya	139
Credits	3,000,000

Summeretto Eidolons

Duplicates unlock powerful enhancements. Here’s what each Eidolon offers (leaked data).

• E1 – Stray Birds of Summer: Max Vibes increased by 20. First Skill use per turn that generates Vibes gives +2 additional points.
• E2 – Heart Like Still Waters: Memosprite records 100% of non-True damage dealt by allies. Memosprite Skill deals bonus True damage to the highest-HP enemy equal to 11% of recorded damage plus 0.1% per Vibes, then clears 50% of recorded value.
• E3 – Gleanings of Lost Echoes: Skill and Talent level +2 (max 15); Memosprite Talent level +1 (max 10).
• E4 – Hearing the Chord Variations: Entering Fever grants 12 Vibes and increases Memosprite Speed by 20% + 0.5% per Vibes.
• E5 – Together, Toward a New Dawn: Ultimate level +2 (max 15); Basic Attack and Memosprite Skill level +1 (max 10).
• E6 – To Sign an Aria Untitled: All-Type Res Pen +20%. Memosprite Skill damage multiplier increases by 100%. When entering Fever, Crit Damage for Summeretto and her memosprite increases by 200%.

Should You Pull for Summeretto?

Judging purely from leaks: Summeretto appears to be a powerful support that can also contribute significant damage through her memosprite. Her Fever state’s Defense ignore Zone and the massive Crit buffs from traces and Eidolons suggest she could become a staple in high-difficulty content like Memory of Chaos and Simulated Universe. For F2P players, her base kit at E0 still offers strong team buffs and action advance, making her a worthwhile investment. Low-spend players may consider E2 for its True damage addition. However, as with all pre-release information, it’s wise to wait for official confirmation before committing resources.