Theorylytics
FusionRectifierMain DPS★★★★★ 5-Star

Denia

Bubbles of Nihility

Published 2026-07-20 · Updated 3.5+
Content Ratings
ToAA
WhiWaA
OverworldA
Should You Pull?YES

Yes for Fusion Burst carry—Denia’s Entropy / Fusion Burst window is the kit. Liberation “Final Act” opens a Fusion Burst / Entropy damage window for the team. Best with Changli / Lupa / Shorekeeper. Fusion Burst Mode wants teammates who actually inflict Fusion Burst—solo Denia leaves Entropy stranded. Skip when you won’t build Fusion Burst teams.

Denia is a 5★ Fusion Main DPS who fights with a Rectifier. Liberation “Final Act” opens a Fusion Burst / Entropy damage window for the team. Forte “Flawless” opens a Fusion Burst / Entropy damage window for the team.

FusionRectifierMain DPS5★Outro AmpTuneBurst Mode

Overview

Quick Build

Weapon

Boson Astrolabe

Signature option — largest personal spike once Liberation “Final Act” is online.

Echo Set

Molten Rift (5pc)

Default Sonata match for this role/element package.

4-Cost

CRIT Rate / CRIT DMG

Main stat

3-Cost

Fusion DMG

Main stat

1-Cost

ATK%

Substats

CRIT Rate ≥ CRIT DMG > ATK% > Energy Regen

Strengths

  • Liberation “Final Act” opens a Fusion Burst / Entropy damage window for the team — that window is where Denia’s clear speed actually shows up.
  • Forte “Flawless” opens a Fusion Burst / Entropy damage window for the team, so resource banking is mandatory, not optional filler.
  • Outro “Unfinished Lies” opens a Fusion Burst / Entropy damage window for the team — swap timing is part of the damage plan, not just Concerto filling.
  • Aerial / plunge routes give flexible dodge and reposition options mid-combo.

Weaknesses

  • Field-time hungry once Liberation “Final Act” is up — double-DPS swaps dilute the dump window.
  • Wants dedicated supports and ER planning; dropped into a random squad, Liberation uptime falls off a cliff.

Forte Priority

1
Final ActHighest

“Final Act” — opens a Fusion Burst / Entropy damage window for the team. Level first.

2
FlawlessHighest

“Flawless” — opens a Fusion Burst / Entropy damage window for the team.

3
Bubbles and BaitsHigh

Primary generator / setup tool for Liberation and Forte.

4
Formal GreetingsMedium

Opens rotations and often refunds Concerto or setup buffs.

5
Unfinished LiesMedium

Team amp or handoff — important for supports, lower for selfish DPS.

Stat Priority

1
CRIT Rate~70–80% in combat
2
CRIT DMG160%+ (200%+ with signature)
3
ATK%High ATK before ER padding
4
Energy RegenEnough for Liberation uptime
5
Fusion DMG3-cost Echo main
Rotation
General

Build Concerto on supports → Intro Denia → “Bubbles and Baits” / “Flawless” resource loop → “Final Act” dump → “Unfinished Lies” or swap as needed.

S0+

Refine timings once you learn Concerto breakpoints for your specific team.

Weapons

1

CRIT / ATK (signature)

Signature Rectifier tuned to Denia's kit.

Why it works —Best-in-slot when you own it — pull only if you are committing to Liberation “Final Act” long-term.

2
Standard 5★ RectifierA

CRIT Rate / ATK%

Any well-refined 5★ Rectifier with CRIT or ATK.

Why it works —Flexible premium stand-in while farming signature.

3
VariationBF2P Best

ATK% / Energy Regen

Accessible Rectifier option for early investment.

Why it works —Best F2P path — refine and swap off once a 5★ lands.

Echoes

SMolten RiftBest in Slot
Fusion DMG5pc
2PC2pc bonuses as listed in-game for this Sonata.
5PC5pc completes the set identity — farm this set first for the role.
Element-matched 5pc for Fusion DPS.
ALingering Tunes
ATK%5pc
2PC2pc bonuses as listed in-game for this Sonata.
5PC5pc completes the set identity — farm this set first for the role.
General ATK set when element 5pc is unfinished.
BMoonlit CloudsFarmable
Energy Regen5pc
2PC2pc bonuses as listed in-game for this Sonata.
5PC5pc completes the set identity — farm this set first for the role.
Temporary ER set if Liberation uptime is the bottleneck.

Team Compositions

Fusion Burst Team: Aemeath is the Dual-DPS / quickswap partner; Chisa is the Dual-DPS / quickswap partner. Rotation: open Aemeath / Chisa for Concerto → Intro Denia → Liberation / Forte dump. With Lupa, run Denia on Flaming Clawprint and Lupa on Moonlit Clouds.

Character Synergy
Denia
DeniaMain DPS

Denia is the on-fielder — bank Concerto on Aemeath / Chisa, Intro in, then dump Liberation / Forte inside their amp windows.

Aemeath
AemeathMain DPS

Aemeath shares field time with Denia — trade Intro / Outro so both Liberation windows get amp coverage.

Chisa
ChisaMain DPS

Chisa shares field time with Denia — trade Intro / Outro so both Liberation windows get amp coverage.

Forte & Resonance Chain

Forte

Normal AttackDreamweaver's Banquet

Basic Attack - Stagecraft Form Perform up to 4 consecutive attacks, dealing Fusion DMG. Basic Attack - Breakdown Form Perform up to 4 consecutive attacks, dealing Fusion DMG. Heavy Attack - Stagecraft Form Consume STA to attack the target, dealing Fusion DMG. Heavy Attack - Breakdown Form Consume STA to pull in nearby targets, dealing Fusion DMG. Mid-air Attack - Stagecraft Form Consume STA to perform Mid-air Plunging Attack, dealing Fusion DMG. Mid-air Attack - Breakdown Form Consume STA to perform up to 4 consecutive attacks in mid-air, dealing Fusion DMG. Mid-air Heavy Attack - Breakdown Form Hold Normal Attack in the air to perform Mid-air Plunging Attack at the cost of STA, dealing Fusion DMG. Dodge Counter - Stagecraft Form Press Normal Attack shortly after a successful Dodge to attack the target, dealing Fusion DMG. Press Normal Attack shortly after casting this skill to perform Basic Attack - Stagecraft Form Stage 4. Dodge Counter - Breakdown Form Press Normal Attack shortly after a successful Dodge to attack the target, dealing Fusion DMG. Can be cast in mid-air. Press Normal Attack shortly after casting this skill to perform Basic Attack - Breakdown Form Stage 4 or Mid-air Attack - Breakdown Form Stage 4.

Resonance SkillBubbles and Baits

Phantom Bubble - Stagecraft Form Pull in nearby targets, dealing Fusion DMG. Beckon - Breakdown Form Pull in nearby targets, dealing Fusion DMG. This skill shares a Cooldown with Banish - Breakdown Form. Can be cast in mid-air. Banish - Breakdown Form While holding a Dark Core, replace Beckon - Breakdown Form with Banish - Breakdown Form. Cast Banish - Breakdown Form Stage 1 to pull in nearby targets, dealing Fusion DMG. Press Normal Attack or Resonance Skill shortly after to cast Banish - Breakdown Form Stage 2. Banish - Breakdown Form Stage 2 consumes all Dark Cores, dealing Fusion DMG. For each Dark Core consumed, the DMG Multiplier of the attack is increased by 150%. The skill deals Resonance Liberation DMG. This skill shares a Cooldown with Beckon - Breakdown Form. Can be cast in mid-air.

Resonance LiberationFinal Act

Final Act - Stagecraft Form Deal Fusion DMG. After performing this skill, obtain Entropy Shift: Breakdown Form for 12s, then switch to Breakdown Form. Final Act - Breakdown Form When Conformal Charge is full, consume all Conformal Charge and Void Particle to perform this skill. Deal Fusion DMG. After casting this skill, obtain Entropy Shift: Stagecraft Form, which lasts for 30s, and then switch to Stagecraft Form. Can be performed in mid-air. Entropy Shift: Breakdown Form Increases ATK by 30%. Obtaining this effect removes the Entropy Shift: Stagecraft Form effect. Entropy Shift: Stagecraft Form Increases ATK by 30%. Obtaining this effect removes the Entropy Shift: Breakdown Form effect.

Inherent SkillEtched Colors

While in the Entropy Shift states, Denia obtains the following effects based on her current Resonance Mode: - Resonance Mode - Fusion Burst: All Resonators in the team gain 30% Fusion DMG Bonus. - Resonance Mode - Tune Strain: All Resonators in the team gain 10 Tune Break Boost. When a Resonator in the team has an Off-Tune Buildup Rate over 100%, every 10% that runs over increases the Resonator's Tune Break Boost by 8, up to 40.

Inherent SkillVestiges of Falsehood

When Denia engages in combat in Stagecraft Form: restore Dark Core to 2 if she has fewer than 2; restore Void Particle to 20 points if she has fewer than 20. This effect can be triggered once every 12s.

Intro SkillFormal Greetings

It's Been A While! Available in Stagecraft Form, dealing Fusion DMG. Press Normal Attack after casting this skill to cast Basic Attack - Stagecraft Form Stage 4. Knock Knock Available in Breakdown Form, dealing Fusion DMG. Casting this skill grants Entropy Shift: Breakdown Form for 12s.

Forte CircuitFlawless

Erosion Field After casting Resonance Liberation Final Act - Breakdown Form, generate an Erosion Field, lasting for 30s. Only one Erosion Field generated by your own Resonator can exist at a time. Erosion Field pulls in nearby targets once every 4s, dealing Fusion DMG, considered Resonance Liberation DMG. Void Particle When in the Breakdown Form while holding Void Particle, Normal Attack consumes Void Particle on hit and grants the following effects: - The skill DMG is considered Resonance Liberation DMG and the DMG Multiplier is increased by 50%. - Conformal Charge regenerates 100% faster. Resonance Mode - Fusion Burst While in Resonance Mode - Fusion Burst, Denia gains the following effects: - Each time when the following skills deal damage, inflict 2 stacks of Fusion Burst on the target. The same skill can only trigger this effect once every 2s against the same target. Intro Skill It's Been A While!, Intro Skill Knock Knock, Resonance Liberation Final Act - Stagecraft Form, Resonance Liberation Final Act - Breakdown Form, and Erosion Field. - Each time when the following skills deal damage, inflict Fusion Burst on the target. The same skill can only trigger this effect once every 2s against the same target. Basic Attack - Stagecraft Form Stage 3, Basic Attack - Stagecraft Form Stage 4, Basic Attack - Breakdown Form Stage 3, Basic Attack - Breakdown Form Stage 4, Mid-air Attack - Breakdown Form Stage 3, and Mid-air Attack - Breakdown Form Stage 4. - When Denia is in the team, if an enemy falls to Fusion Burst, it counts as caused by the nearest active Resonator. Resonance Mode - Tune Strain While in Resonance Mode - Tune Strain, Denia gains the following effects: - Each time when the following skills deal damage, inflict Tune Strain - Shifting on the target and reset the duration of Tune Strain - Interfered on the target. The same skill can only trigger this effect once every 2s against the same target. Intro Skill It's Been A While!, Intro Skill Knock Knock, Resonance Liberation Final Act - Stagecraft Form, Resonance Liberation Final Act - Breakdown Form, Erosion Field, Basic Attack - Stagecraft Form Stage 3, Basic Attack - Stagecraft Form Stage 4, Basic Attack - Breakdown Form Stage 3, Basic Attack - Breakdown Form Stage 4, Mid-air Attack - Breakdown Form Stage 3, and Mid-air Attack - Breakdown Form Stage 4. - When Resonators in the team inflict Tune Strain - Shifting on the target, this target's Off-Tune Level is increased by 50% of the max. This effect can only be triggered on the same target once every 300s. Dark Core - Denia can hold up to 3 Dark Core. - While in the Entropy Shift states, Denia obtains 1 Dark Core every 12s. Denia obtains 1 Dark Core upon casting Intro Skill It's Been A While! and Intro Skill Knock Knock. Void Particle - Denia can hold up to 100 points of Void Particle. - While in Stagecraft Form, dealing damage through Normal Attack grants Void Particle. - Casting Intro Skill It's Been A While!, Intro Skill Knock Knock or Resonance Skill Phantom Bubble - Stagecraft Form grants 25 points of Void Particle. Conformal Charge - Denia can hold up to 100 points of Conformal Charge. - While in Breakdown Form, dealing damage through Normal Attack or Resonance Skill Beckon - Breakdown Form grants Conformal Charge. - Casting Resonance Skill Banish - Breakdown Form Stage 2 grants 40 points of Conformal Charge.

Outro SkillUnfinished Lies

When in Resonance Mode - Fusion Burst, Fusion Burst DMG against targets near the active Resonator in the team is Amplified by 60% for 30s. This effect ends early when Denia switches modes. When in Resonance Mode - Tune Strain, the incoming Resonator has their All DMG Amplified by 15% for 16s. After this Resonator under this effect inflicts Tune Strain - Shifting, they gain 40% DMG Amplification instead. This effect ends early when this Resonator is switched out or when Denia switches modes.

Tune BreakShattered Hours

When the target's Off-Tune Level is full, Denia can cast Tune Break on the target. When in Resonance Mode - Tune Strain, Denia gains the following effects: - Denia can inflict Tune Strain - Shifting on the target. - Denia can respond to Tune Strain - Interfered. When responding to Tune Strain - Interfered: For each stack of Tune Strain - Interfered on the target, each point of Denia's Tune Break Boost increases her total DMG against the target by 0.12%. While Denia is in the team, the max stack limit of Tune Strain - Interfered on a target is increased by 1.

Resonance Chain

1
S1
2
S2
3
S3
4
S4
5
S5
6
S6
S1Silent Glows in a Dimlit Dream

Crit. DMG is increased by 30%. When performing Resonance Skill Phantom Bubble - Stagecraft Form, or Resonance Skill Banish - Breakdown Form, Basic Attack - Breakdown Form Stage 3, Basic Attack - Breakdown Form Stage 4, Mid-air Attack - Breakdown Form Stage 3, and Mid-air Attack - Breakdown Form Stage 4, Denia becomes immune to interruption. When Denia enters combat in Stagecraft Form, she obtains the Entropy Shift: Stagecraft Form effect for 30s. When Denia enters combat in Breakdown Form, she obtains the Entropy Shift: Breakdown Form effect for 12s.

Is it worth getting?

Comfort opener: Flat CRIT bump tied to a specific combat state. Nice QoL/damage, but S0 still runs the full kit — don’t break pity for S1 alone.

S2Tossed in the Tides of RealityPull Target

When Denia is in Resonance Mode - Fusion Burst, after a Resonator in the team inflicts Fusion Burst on the target, they gain 50% Fusion DMG Bonus for 15s. After Fusion Burst is triggered on enemies near the active Resonator in the team, Denia gains 1 stacks of Degenerate Voidmatter for 15s, up to 10 stacks. Each stack of Degenerate Voidmatter causes Denia to ignore 1% of the target's Fusion RES. This effect ends when Denia switches modes. When Denia is in Resonance Mode - Tune Strain, her Forte Circuit effect is enhanced: After a Resonator in the team inflicts Tune Strain - Shifting on the target, their Tune Break Boost is increased by 20 for 15s, and the target's Off-Tune Level is increased by 100% of the max. This effect can only be triggered once per 300s on the same target. This effect ends when Denia switches forms. The DMG Multiplier of Resonance Skill Banish - Breakdown Form is increased by 40%.

Is it worth getting?

Defining stop for many accounts: Extends or empowers the unit’s named burst state. Pull here if you main Denia; this is the Sequence that changes how the kit is played.

S3Through Dark and Wind, the Erlking Follows

The DMG Multiplier of Resonance Liberation Final Act - Breakdown Form is increased by 80%. Denia now holds up to 5 Dark Core. While in Entropy Shift, the shortest interval at which she can obtain Dark Core is reduced to 6s. The Entropy Shift: Stagecraft Form effect is enhanced and now grants 4 points of Void Particle per second. The Entropy Shift: Breakdown Form effect is enhanced: Casting Resonance Liberation Final Act - Breakdown Form additionally restores 30 points of Concerto Energy. Denia's Inherent Skill Vestiges of Falsehood is enhanced: Upon entering combat, Dark Core and Void Particle are restored to the max. This effect can be triggered once every 12s. When the number of Dark Cores reaches the limit, casting Basic Attack - Stagecraft Form Stage 4 or Resonance Skill Phantom Bubble - Stagecraft Form consumes all Dark Core and increases the DMG Multiplier of this skill by 1200%. The DMG dealt is considered Resonance Liberation DMG.

Is it worth getting?

Situational S3: Refunds Energy / Concerto / Forte resources mid-rotation.

S4From the Far Beyond, to the Far Beyond

The attack interval of Erosion Field is reduced to 3s.

Is it worth getting?

Side-grade: The attack interval of Erosion Field is reduced to 3s. Happy if it drops; not a planned stopping point.

S5If Lies Patch Up a HeartSkip

The DMG of Resonance Liberation Final Act - Stagecraft Form is increased by 100%.

Is it worth getting?

Late luxury: Adds RES / DEF shred or a large DMG Bonus clause. Grab it if you overshoot toward S6 — never hard-pity for S5 alone.

S6May You Find Your Sun in the SilenceSkip

While in Entropy Shift states, gain 60% ATK increase and 60% Fusion DMG Bonus. While Denia is in Resonance Mode - Fusion Burst, after Erosion Field deals damage, trigger Fusion Burst on the target based on its max limit. The Fusion Burst DMG triggered gains a 200% DMG Multiplier increase against the main target and does not remove the Fusion Burst stacks on the targets hit. The effect can be triggered on the same target up to 1 time. When the target is damaged by Resonance Liberation Final Act: Breakdown Form, the effect's trigger count is reset. The trigger count can be reset for the same target once every 2s. While Denia is in Resonance Mode - Tune Strain, when Resonators in the team deal Tune Break DMG to Mistuned enemies in Tune Strain - Shifting, they additionally inflict 1 stack of Tune Strain - Interfered on the target. This effect can only be triggered on the same target once every 3s.

Is it worth getting?

Whale ceiling: Extends or empowers the unit’s named burst state. Only chase if Denia is your dedicated main and S0–S2 already feel finished.

Denia is fully usable at S0. Most dedicated mains stop at S2 before chasing higher Wavebands. First stop: S2. Endgame target: S2.

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