Robin • Summeretto
Last updated 2026-08-27
Robin • Summeretto is a playable character in Honkai: Star Rail.
Soaring clearest skies and bluest oceans, wings sweep up the sea spray, transforming it into a new melody.
Following the lingering echoes of memory, she embraces the unexpected along the way, seeking inspiration for a melodic variation—
Beyond the melody, how else can the Harmony sing?[7]
Combat Info
Ascensions and Stats
| Ascension Phase | Level | Base HP | Base ATK | Base DEF | Base SPD | Ascension Costs |
|---|---|---|---|---|---|---|
| 0✦ | 1/20 | 163 | 81 | 66 | 95 | (0 → 1) |
| 20/20 | 319 | 159 | 128 | 95 | ||
| Ascension Cost (0 → 1) | ||||||
| 1✦ | 20/30 | 384 | 192 | 155 | 95 | (1 → 2) |
| 30/30 | 466 | 233 | 188 | 95 | ||
| Ascension Cost (1 → 2) | ||||||
| 2✦ | 30/40 | 531 | 265 | 214 | 95 | (2 → 3) |
| 40/40 | 613 | 306 | 247 | 95 | ||
| Ascension Cost (2 → 3) | ||||||
| 3✦ | 40/50 | 679 | 339 | 273 | 95 | (3 → 4) |
| 50/50 | 761 | 380 | 306 | 95 | ||
| Ascension Cost (3 → 4) | ||||||
| 4✦ | 50/60 | 826 | 413 | 333 | 95 | (4 → 5) |
| 60/60 | 908 | 454 | 366 | 95 | ||
| Ascension Cost (4 → 5) | ||||||
| 5✦ | 60/70 | 973 | 486 | 392 | 95 | (5 → 6) |
| 70/70 | 1,055 | 527 | 425 | 95 | ||
| Ascension Cost (5 → 6) | ||||||
| 6✦ | 70/80 | 1,121 | 560 | 452 | 95 | — |
| 80/80 | 1,203 | 601 | 485 | 95 | ||
308,000 CreditAbilities
| Icon | Type | Name | Tag | Energy | Toughness Reduction | ||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | Basic ATK | The Sea Sings in My Key | Single Target | Generation: 20 | 10 | ||||||||||||||||||||||||||||||||||||||||||||||||
 | Skill | Summer Strums the Soul | Summon | Generation: 30 | |||||||||||||||||||||||||||||||||||||||||||||||||
Summons the memosprite "Summer Songbirds" Bessie. If any member of the "Summer Songbirds" is already on the field, restores their HP by an amount equal to 50%-110% of "Summer Songbirds'" Max HP, and gains 6 Vibes.
| |||||||||||||||||||||||||||||||||||||||||||||||||||||
 | Ultimate | Ascend That Rhapsody in Blue | Support | Cost: 140 Generation: 5 | |||||||||||||||||||||||||||||||||||||||||||||||||
Advances the action of one designated ally character (excluding Robin • Summeretto) by 100% and regenerates a fixed amount of Energy equal to 12%-21.6% of their Max Energy. Then, grants them the "Special Guest" effect. When the "Special Guest" character or their summon attacks, they additionally grant Robin • Summeretto 2 Vibes but cannot make other friendly targets gain the action advance effect. This lasts for 2 turn(s), and its duration decreases by 1 at the start of this character's turn.
| |||||||||||||||||||||||||||||||||||||||||||||||||||||
 | Talent | Wings Heed No Borders | Enhance | ||||||||||||||||||||||||||||||||||||||||||||||||||
Memosprite "Summer Songbirds" has an initial Max HP equal to 70% of Robin • Summeretto's Max HP and an initial SPD equal to 180% of Robin • Summeretto's SPD. When an ally target uses an attack, or when they provide healing or Shield for the first time in any target's turn, Robin • Summeretto gains Vibes by 1 point, capped at 50. While "Summer Songbirds" Bessie is on the field, if Robin • Summeretto's Vibes is 6 or higher, immediately summons "Summer Songbirds" Drummie, and if Vibes is 12 or higher, immediately summons "Summer Songbirds" Paddie. When all "Summer Songbirds" take the stage, dispels all Crowd Control debuffs inflicted upon Robin • Summeretto and the "Summer Songbirds", starts the "Fever" state, and deploys a Zone. When ally targets deal DMG within the Zone, they ignore a percentage of enemy targets' DEF equal to (10%-16% + Vibes × 0.5%).
| |||||||||||||||||||||||||||||||||||||||||||||||||||||
 | Technique | We Are the Melody | Enhance | ||||||||||||||||||||||||||||||||||||||||||||||||||
 | Memosprite Skill | Chirrup Quartet | AoE | Generation: 20 | 10 | ||||||||||||||||||||||||||||||||||||||||||||||||
 | Memosprite Talent | A Warble of Wings | Support | ||||||||||||||||||||||||||||||||||||||||||||||||||
While in the "Fever" state, the "Summer Songbirds" and a countdown will appear on the Action Order. And the DMG dealt by Robin • Summeretto and "Summer Songbirds" increases by an amount equal to (30%-66% + Vibes × 1%-2.2%). When "Summer Songbirds'" turn starts, uses the Memosprite Skill. The countdown has an initial SPD of 140. And when its turn starts, deducts 50% of the current Vibes (minimum 12 points). When the Vibes reaches 0, the "Summer Songbirds" disappears and Robin • Summeretto exits the "Fever" state. While the "Summer Songbirds" is on the field, based on the number of its members present, increases the DMG taken by all enemies by 4%-8.8%/6%-13.2%/8%-17.6% respectively.
| |||||||||||||||||||||||||||||||||||||||||||||||||||||
| Memosprite Talent | Near the Sea's Heartbeat | Support | ||||||||||||||||||||||||||||||||||||||||||||||||||
| When the "Summer Songbirds" gets summoned, regenerates 20 Energy for Robin • Summeretto. | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| Memosprite Talent | Astride Summer's Nightwind | Support | ||||||||||||||||||||||||||||||||||||||||||||||||||
| When the "Summer Songbirds" disappears, Robin • Summeretto's action advances by 50%. | |||||||||||||||||||||||||||||||||||||||||||||||||||||
Traces
| Trace Level | Required Ascension | Credits [Subtotal] | Character Ascension Materials and Trace Materials [Subtotal] | Trace Materials [Subtotal] |
|---|---|---|---|---|
| 1 → 2 | 2✦ | 5,000 [5,000] |  6 [6] |  3 [3] |
| 2 → 3 | 3✦ | 10,000 [15,000] |  3 [3] |  3 [3] |
| 3 → 4 | 4✦ | 20,000 [35,000] | 4 [7] | 5 [8] |
| 4 → 5 | 5✦ | 45,000 [80,000] |  3 [3] |  3 [3] |
| 5 → 6 | 6✦ | 160,000 [240,000] | 4 [7] | 8 [11] |
240,000 Credit| Trace Level | Required Ascension | Credits [Subtotal] | Character Ascension Materials and Trace Materials [Subtotal] | Trace Materials [Subtotal] | ||
|---|---|---|---|---|---|---|
| 1 → 2 | 1✦ | 2,500 [2,500] | 3 [3] | |||
| 2 → 3 | 2✦ | 5,000 [7,500] | 6 [9] | 3 [3] | ||
| 3 → 4 | 3✦ | 10,000 [17,500] | 3 [3] | 3 [3] | ||
| 4 → 5 | 4✦ | 20,000 [37,500] | 4 [7] | 5 [8] | ||
| 5 → 6 | 30,000 [67,500] | 6 [13] | 7 [15] | |||
| 6 → 7 | 5✦ | 45,000 [112,500] | 3 [3] | 3 [3] | ||
| 7 → 8 | 80,000 [192,500] | 4 [7] | 5 [8] |  1 [1] | ||
| 8 → 9 | 6✦ | 160,000 [352,500] | 8 [16] | 1 [2] |  1 [1] | |
| 9 → 10 | 300,000 [652,500] | 14 [30] | 1 [3] | 1 [2] | ||
652,500 Credit SPD BoostSPD increases by 2 |
 HP BoostMax HP increases by 4.0% Req. Character Ascension 2 | ||
| SPD Boost SPD increases by 2 Req. Character Ascension 3 | |||
 Deviated ChordsWhen an ally target causes Robin • Summeretto to gain Vibes, if their ATK is higher than Robin • Summeretto's, increases that target's ATK by an amount equal to (16% + Vibes × 0.4%) of Robin • Summeretto's Max HP. Otherwise, increases that target's CRIT DMG by an amount equal to (40% + Vibes × 1.5%). Lasts for 2 turn(s). Req. Character Ascension 2 |
 CRIT Rate BoostCRIT Rate increases by 2.7% Req. Character Ascension 3 |
SPD Boost SPD increases by 3 Req. Character Ascension 4 | |
 Improvised BluesWhen Robin • Summeretto or the "Summer Songbirds" receive healing or Shield provided by teammates, causes Robin • Summeretto to gain 12 stack(s) of "Groove," capped at 12. The first time Robin • Summeretto gains Vibes during any target's turn, if she has "Groove," consumes 1 stack of "Groove" and regenerates a fixed 3 Energy. Req. Character Ascension 4 |
HP Boost Max HP increases by 6.0% Req. Character Ascension 5 |
SPD Boost SPD increases by 3 Req. Character Ascension 5 | |
 Rebuilt HarmonyIncreases the CRIT Rate of Robin • Summeretto and "Summer Songbirds" by 50%. Req. Character Ascension 6 |
CRIT Rate Boost CRIT Rate increases by 4.0% Req. Character Ascension 6 |
HP Boost Max HP increases by 8.0% Req. Character Lv. 75 |
SPD Boost SPD increases by 4 Req. Character Lv. 80 |
Eidolons
| Icon | Name | Level |
|---|---|---|
 | Stray Bird of Summer | 1 |
| "Summer Songbirds" will keep a tally of 100% of the non-True DMG dealt by ally targets. When using the Memosprite Skill, additionally deals True DMG to the enemy target with the highest HP, equal to (11% + current Vibes × 0.1%) of the total tally. Then, clears 50% of the tally. | ||
 | A Heart of Still Water | 2 |
| Ally targets' All-Type RES PEN increases by 18%. The upper limit of Robin • Summeretto's Vibes increases by 20. The first time an ally target uses an ability during any target's turn to cause Robin • Summeretto to gain Vibes, she gains an additional 2 points. | ||
 | Echoes Left Along the Way | 3 |
| Skill Lv. +2, up to a maximum of Lv. 15. Talent Lv. +2, up to a maximum of Lv. 15. Memosprite Talent Lv. +1, up to a maximum of Lv. 10. | ||
 | Her Variation on the Theme | 4 |
| Upon entering the "Fever" state, immediately gains 12 Vibes, and increases the SPD of "Summer Songbirds" by an amount equal to (20% + current Vibes × 0.5%). | ||
 | To Chase the Dawn Anew | 5 |
| Ultimate Lv. +2, up to a maximum of Lv. 15. Basic ATK Lv. +1, up to a maximum of Lv. 10. Memosprite Skill Lv. +1, up to a maximum of Lv. 10. | ||
 | A Song Yet Unnamed | 6 |
| Increases the Memosprite Skill's DMG multiplier by 100% of its original value. While in the "Fever" state, Robin • Summeretto can store her Ultimate up to 2 times. After entering the "Fever" state for the first time in this battle or when the the "Fever" countdown's turn starts, regenerates a fixed 140 Energy. | ||
Achievements
There are 2 Achievements related to Robin • Summeretto:
|
|
Name | Category | Description | Hidden | Version | 
|
|---|---|---|---|---|---|---|
|
|
POV: Bro Won't Sing at Karaoke | Eager for Battle | In a single combat, use ally character Robin • Summeretto's Summer Songbirds to deal the final hit to "Harmonious Choir" The Great Septimus | No | 4.5 | 5 |
|
|
THIS IS IT | Eager for Battle | In a single combat, Robin • Summeretto's Vibes reach the maximum limit | No | 4.5 | 5 |
Availability
Event Warps
Robin • Summeretto has been promoted or featured with a drop-rate boost in 1 Event Warp:
| Warp | Featured | Duration | Version |
|---|---|---|---|
 Summer Chorus 2026-08-26 |
  Robin • Summeretto |
August 26, 2026 – September 12, 2026 | 4.5 |
Other Languages
| Language | Official Name |
|---|---|
| English | Robin • Summeretto |
| Chinese (Simplified) | 知更鸟•晴歌 |
| Chinese (Traditional) | 知更鳥•晴歌 |
| Japanese | ロビン・夏空の歌 |
| Korean | 로빈•서머레토 |
| Spanish | Robin Estival |
| French | Robin • Estivaria |
| Russian | Зарянка: Яснопея |
| Thai | Robin - คีตะคิมหันต์ |
| Vietnamese | Robin - Summeretto |
| German | Robin – Summeretto |
| Indonesian | Robin • Summeretto |
| Portuguese | Robin - Summeretto |
Change History
References
- ↑ Dreamscape Pass: Stars of Morning and Night
- ↑ Trailblaze Mission, In Our Time: Beauty and Destruction
Sunday: Would you still support Robin's journey on the Path of Harmony? - ↑ Trailblaze Continuance, Sweet Dreams and the Holy Grail (Trailblaze Continuance): Fate/Night in Dreamland
- ↑ Trailblaze Mission, In Our Time: Everything that Rises Must Converge
"Dreammaster": You and your sister were born as twins of the Order, and one of you is destined to follow this path to the end. - ↑ Alice Himora (June 30, 2026). EN VA Self Announcement. Twitter. Retrieved June 30, 2026.
- ↑ 6.0 6.1 6.2 6.3 6.4 6.5 6.6 崩坏星穹铁道 (June 30, 2026). Robin • Summeretto Chinese Character Reveal. Bilibili. Retrieved June 30, 2026.
- ↑ 7.0 7.1 Honkai: Star Rail (June 30, 2026). Robin • Summeretto Character Reveal. Twitter. Retrieved June 30, 2026.
| ||||||||||||||||||||||||||||||||||||||
