Core Fusion — Unlock Priorities — General Guides

Core Fusion heroes are upgraded versions of existing characters, unlocked through the Core Fusion system. They require the original character at 5★ transcendence and 300 to unlock.
Once unlocked, all skills start at Lv1 and can be leveled up together for 150 per level, up to Lv5 (900 total). These units also have a unique Core Fusion Passive that upgrades upon reaching Lv5.
This guide covers unlock priorities and reviews for each Core Fusion hero.

Unlock Priority

1st Priority

Core Fusion Veronica

Core Fusion Eternal

Core Fusion Notia

Core Fusion Epsilon

2nd Priority

Core Fusion Lisha

Core Fusion Snow

Core Fusion Epsilon

Full rework into a DEF-scaling DPS: every skill now deals damage proportional to Defense instead of Attack, and gains +50% DMG while is active (all Barrier-conditional bonuses removed). Gains buff steal across the kit and a team buff on S3.

Skill Changes

Super Cool Killing Machine → Efficient Sweep

Chance to gain increased: 20/35/50% → 50/75/100% (guaranteed at Lv5).

Automaton of Rupture → Victory Command

Gains (1 buff, 2 at Lv4).
Burst 1: enhanced steal (ignores Resilience) + 1 WGD (was DMG increase + +1).
Burst 2: DMG increase (was +1).

The World Is Ours → Planetary Purification Protocol

Changed from AoE to single-target. AP self-recovery (35 per target) replaced by removing all of the target's AP. After attacking, grants team (2 turns). at Lv5 unchanged.

Chain / Dual

Chain: Starter → Companion. Team replaced by on own skills.
Dual: Barrier-conditional DMG replaced by (1 buff, ignores Resilience).

Fusion Passive

+50% DMG vs elemental advantage. Enhanced (Lv5): all attacks count as elemental advantage.

Transcendence Bonus

5★: +30% Penetration against Dimensional Singularity bosses.

Exclusive Equipment

Base Ksai's Spare Core

Lv. 1

When hit by an attack that targets all enemies, increases Priority by 50% (Only once per turn)

Lv. 10

When using The World Is Ours, reduces Action Points of all targets by 60

Core Fusion Annual Defense Budget

Lv. 1

Priority +50% when hit by an AoE attack (Activates once per turn)

Lv. 10

When attacking a Dimensional Singularity Boss, grants increased Defense to the caster for 2 turns before using the skill (Activates once every 3 turns)

Recommended LevelLv 3

600orLv 5

900

Core Fusion Eternal

More damage, new debuff on S3, and buff at battle start from transcendence.

Skill Changes

Fool's Paradise → Guiding Lantern

Inflicts additional (2 turns) on Earth Earth targets.
Burst 1: grants to self (was Effectiveness).
Burst 2: inflicts (2 turns).

No One Lives Forever → Death Sentence

Inflicts -20% on the enemy with the highest ATK.

Chain / Dual

Chain Companion Effect: replaced by (2 turns, ignores Resilience) on all enemies.

Fusion Passive

On Death Sentence use: self and .

Transcendence Bonus

Self (1 turn) at battle start.

Exclusive Equipment

Base Death's Notes

Lv. 1

Gain an Extra Turn when No One Lives Forever or Death Sentence is used

Lv. 10

Increases Effectiveness +100%

Core Fusion Broken Providence

Lv. 1

Own Effectiveness increases +100%

Lv. 10

Right after using Death Sentence, does not trigger an enemy's Counterattack, Revenge, or Agile Response.

Recommended LevelLv 3

600orLv 5

900

Core Fusion Lisha

Full rework into a self-sufficient anti- Earth Earth DPS with up to 50% DEF ignore.

Skill Changes

Meow Meow Zap! → Swoosh, Zap!!

self-buff replaced by self-buff (2 turns at Lv5).

Lightning Bolt! → Fierce Lightning Storm!

Complete rework. Grants (3 turns).
With : becomes single-target + S3 cooldown -1.
Vs Earth Earth: +30% Priority.

Meowteor Shower → Walpurgis' Light!

Self-buff changed from to (3 turns). +20% DMG vs Earth Earth replaced by DEF ignore:
With : ignores 20% DEF.
Vs Earth Earth: ignores additional 30% DEF (50% total).

Chain / Dual

Chain: Starter → Companion. Team replaced by 25 AP restore (caster + next chain unit).
Dual: duration 1 → 2 turns.

Fusion Passive

+50% DMG vs elemental advantage. Enhanced (Lv5): +50% DMG vs bosses.

Exclusive Equipment

Base Cleaning Brush

Lv. 1

When using Meowteor Shower or Walpurgis' Light!, increases damage dealt inversely proportional to the number of targets.

Lv. 10

When using Meowteor Shower or Walpurgis' Light!, increases Penetration by 30% when there is only one target.

Core Fusion The Supreme Witch's Companion

Lv. 1

Damage dealt by Mage-type allies (excluding the caster) +50%

Lv. 10

When a Mage ally takes action, increases own Attack by +7% (Stacks up to 5 times).

Recommended LevelLv 3

600orLv 5

900

Core Fusion Notia

Massive output on nearly every action. Shifts from a priority/debuff controller to a full-on poison carry. Fierce Offensive +1 turn upon entering battle.

Skill Changes

Nimble Dance → Galeforce Blade

With Fierce Offensive: gains (2 turns) on target.
Burst 2: Poison Detonate (was DMG increase).

Swift Support → Blade Dance of Judgment

Crystal Storm now inflicts unconditionally (was Fierce Offensive only). With Fierce Offensive: additional + on healers.

Crystalline Waltz → Guardian of the Sanctuary

Gains on all enemies (2 turns at Lv5). +1 additional stack vs bosses.

Chain / Dual

Chain: 25 AP restore replaced by (2 turns).
Dual: +20% Priority replaced by (2 turns).

Fusion Passive

+50% DMG vs elemental advantage. Enhanced (Lv5): +50% Effectiveness.

Exclusive Equipment

Base Earth's Grace

Lv. 1

Grants Fierce Offensive for 1 turn(s) at the start of battle (Does not stack with Core Fusion effect)

Lv. 10

After using Crystal Storm, own Priority +20%

Core Fusion Resolve of Earth

Lv. 1

After using Crystal Storm, own Priority +25%

Lv. 10

Ally Poisoned DMG +50%

Recommended LevelLv 5

900

Core Fusion Snow

Full Speed scaling across all skills. Priority reduction extended to all enemies (still some bonus against Fire Fire enemies). now guaranteed.

Skill Changes

Frigid Hail Fire → Icicle Arrow

Priority reduction now targets all enemies (was Fire Fire only). +10% additional vs Fire Fire.

Ice Chunk → Snow Break

now guaranteed (was 80%). Gains +20% Priority after attacking. +50% DMG vs targets.

Frostblow → Glacial Rain

Changed from AoE to single-target. Priority reduction replaced by self-buff and (2 turns). Extra Priority reduction vs Fire Fire remains.

Chain / Dual

Chain: Finish → Companion. Gains Speed scaling + always counts as elemental advantage.
Dual: gains Speed scaling + -10% target Priority.

Fusion Passive

+50% DMG vs elemental advantage. Enhanced (Lv5): +50% DMG vs bosses.

Exclusive Equipment

Base Glacial Bow

Lv. 1

After using Frostblow or Glacial Rain, Priority +20%

Lv. 10

After using Frostblow or Glacial Rain, Priority +40%

Core Fusion Frost Nova

Lv. 1

Effectiveness +100%

Lv. 10

If the target is a Boss, Penetration 30%

Recommended LevelLv 3

600orLv 5

900

Core Fusion Veronica

All skills now deal damage proportional to the caster's Max Health instead of a mixed scaling ratio. This makes her a pure HP-scaling tank.

Skill Changes

Battlefield Commander → Resolute Command

no longer requires . on target if is active.
Burst 1: +1 WGD.
Burst 2: ignores Resilience.

Commander's Resolve → Sword Destroyer

now targets lowest HP ally instead of self only. Gains counterattack when hit, inflicts .

Endurance Cannon → Guardian Sword of the Kingdom

2 buffs (was 1). Ignores 30% DEF vs bosses.

Chain / Dual

Chain: unchanged. Dual: 100% (was 70%).

Fusion Passive

Team for 2 turns at battle start. Increases damage for all allies under .

Exclusive Equipment

Base Elysion

Lv. 1

Increases damage proportional to Max Health

Lv. 10

+20% Max Health

Core Fusion Asphodel

Lv. 1

Increases damage dealt when using Sword Destroyer.

Lv. 10

Increases Priority by +30% when hit (Activated once every 2 turns).

Recommended LevelLv 5

900