Heartstring Nocturne

Max-level stats (Lv60)

ATK (Lv.60)

-

CRIT Rate (Lv.60)

-

Rank

S

W-Engine effect

Rank SAttack

String & Melody

CRIT DMG increases by 50%. When the equipper enters the battlefield, or activates a Chain Attack or Ultimate, they gain 1 stack of Heartstring. Each stack of Heartstring allows the equipper's Chain Attack and Ultimate to ignore 12.5% of the target's Fire RES, stacking up to 2 times and lasting 30s. Repeated triggers reset the duration. *Stats shown are at Base level.

Overclock Table (★1 → ★5)

Official values straight from the publisher — every duplicate copy Overclocks the passive by one star, capped at ★5.

Upgrade	★☆☆☆☆	★★☆☆☆	★★★☆☆	★★★★☆	★★★★★
CRIT DMG increases	50%	57.5%	65%	72.5%	80%
Chain Attack & Ultimate Fire RES Pen.	12.5%	14.5%	16.5%	18.5%	20%

Materials & Stats per Breakthrough Milestone (0 → 60)

The full ATK/sub-stat curve across all 7 milestones plus the materials each one costs, read straight from official data.

Lv.	Before	After	Material
Lv.0	ATK: - CRIT Rate: -	ATK: 48 CRIT Rate: 9.6%
Lv.10	ATK: 123 CRIT Rate: 9.6%	ATK: 166 CRIT Rate: 12.5%	Denny ×12,000 Attack Component ×4
Lv.20	ATK: 241 CRIT Rate: 12.5%	ATK: 284 CRIT Rate: 15.4%	Denny ×28,000 Reinforced Attack Component ×12
Lv.30	ATK: 359 CRIT Rate: 15.4%	ATK: 402 CRIT Rate: 18.2%	Denny ×60,000 Reinforced Attack Component ×20
Lv.40	ATK: 477 CRIT Rate: 18.2%	ATK: 520 CRIT Rate: 21.1%	Denny ×100,000 Specialized Attack Component ×10
Lv.50	ATK: 595 CRIT Rate: 21.1%	ATK: 638 CRIT Rate: 24%	Denny ×200,000 Specialized Attack Component ×20
Lv.60	ATK: 713 CRIT Rate: 24%	ATK: - CRIT Rate: -

Total materials for the full 0→60 climb

Denny ×400,000 Attack Component ×4 Reinforced Attack Component ×32 Specialized Attack Component ×30

Where To Farm

Combat Simulation — each Enemy Card costs 20 Battery, up to 5 cards per run (100 Battery for a full run).

Signature Holder

Heartstring Nocturne's exclusive signal W-Engine — equip it on the matching Agent to unlock the signature outfit.

Evelyn Chevalier

Best Agents for this W-Engine

Recommended for

S

Evelyn S+

How to Get This W-Engine

Pull it from Signal Search using Master Tapes / Encrypted Master Tapes (bought with Polychrome) — S-rank W-Engines get their own banner, usually alongside the matching character's banner.

Trade for it at the Gadget Shop's Box Galaxy section (Sixth Street): costs W-Engine Components + W-Engine Chips + Denny; Chips come from disassembling spare W-Engines.

A handful of A/B-rank W-Engines unlock through Proxy Primer trials or as story/event rewards instead of the gacha — not every W-Engine is pullable.

Compare with Same-Specialty Picks

Other Attack-specialty W-Engines, sorted by rank — solid stand-ins while you don't have the signature.

W-Engines	Rank	Base ATK (Lv.60)
Heartstring Nocturne	S	-
Knight's Extolment	S	—
Sol Exuvia	S	713
Serpentine Seeker	S	713
Cordis Germina	S	713
Cloudcleave Radiance	S	743
Severed Innocence	S	-

Official Artwork / Lore

The soft hum of hidden strings and faint light blooming in the deep night, where sharpness and calm intertwine, transforming into a silent melody. Thread by thread, it captures everything held dear within. "This? It's just a device for storing instrument strings." —Evelyn, gently strumming the strings. A low hum fills the air, and as the final note echoes, the enemy falls silent.

Alternatives of the same specialty

Attack specialty — decent picks while you don't have this one

Knight's Extolment

Sol Exuvia

Serpentine Seeker

Cordis Germina

How to read this W-Engine page

Every W-Engine has 5 Refinement ranks (R1→R5): refinement ONLY strengthens the passive effect — the numbers in the table above run from left (R1, unrefined) to right (R5, max refinement via 4 duplicates or Overclock materials); Base ATK and the Advanced Stat (CRIT Rate/CRIT DMG/ATK%/PEN Ratio/Anomaly Proficiency...) do NOT change with refinement, only with the engine's level. "Best Agents for this W-Engine" prioritizes agents whose real build actually recommends this engine; if that data isn't available yet, the page falls back to agents sharing the same specialty as a rough guide. "Alternatives of the same specialty" lists other W-Engines with the same role — useful when you don't own the engine shown on this page.

FAQ

What is Heartstring Nocturne in Zenless Zone Zero?

Heartstring Nocturne is a rank S W-Engine built for the Attack specialty in Zenless Zone Zero — equip it on an Agent of the matching specialty to unlock the full passive effect; see the base stats and the full R1→R5 Refinement table in the sections above.

Which Agents should use Heartstring Nocturne?

Heartstring Nocturne fits Attack specialty Agents best, with 1 recommended characters including Evelyn — see the full list with portraits in the "Best Agents for this W-Engine" section above.

How much Denny and material does it take to upgrade Heartstring Nocturne, and where do I farm it?

Leveling Heartstring Nocturne through every milestone takes roughly 4 W-Engine components and Denny ×400,000, Attack Component ×4, Reinforced Attack Component ×32 Denny combined — the components drop from Combat Simulation; see the exact breakdown per milestone and the Battery cost in the "How Much You Need" and "Where to Farm" sections above.

Is Overclocking Heartstring Nocturne worth it?

Overclocking only strengthens Heartstring Nocturne's passive effect from ★1 up to ★5 (5 copies) — it never changes Base ATK or the sub-stat, so getting the base copy matters far more; treat extra copies as a bonus.

Where do I get Heartstring Nocturne?

Mostly through Signal Search gacha (Polychrome); a few A/B-rank W-Engines are tradeable at the Gadget Shop's Box Galaxy or come from story/event rewards — see the "How to Get" section above for details.