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When Dreams Remain Unfinished/Dream Investigation

Last updated 2025-11-24

Tutorials

Dream Combat General Rules
File:Tutorial Dream Combat General Rules.png
· You can select one skill to use per turn.
· Choose a skill and select a suitable target, then click the skill again to cast it. (Hold a skill to view its detailed description.)
· You can also control a monster's movement to find the best position to use your skills.

File:Tutorial Energy.png
Some monster skills can restore Energy, while certain powerful skills consume Energy to activate.
Different skills are color-coded from weak to strong: green, blue, purple, and orange.

Ethereal-Specific Mechanics: Marks
File:Tutorial Ethereal-Specific Mechanics: Marks.png
· Marks can increase DMG dealt to enemies.
· Support Ethereals' skills can apply marks to enemies, while DPS Ethereals' skills can consume marks to trigger an Aftershock.

Monster Category Counters
File:Tutorial Monster Category Counters.png
· There are 3 monster categories. Ethereal counters Mechanical, Mechanical counters Biological, and Biological counters Ethereal.
· When attacking, monsters deal increased DMG to the type they counter, and reduced DMG to the type that counters them.

Rapid-Press Interaction
File:Tutorial Rapid-Press Interaction.gif
Ionized Skill 2 supports Rapid-Press Interaction. When the button appears, tap/press repeatedly for better skill effects.

Mechanical-Specific Mechanics: Energy
File:Tutorial Mechanical-Specific Mechanics: Energy 1.png
· The core mechanic of Mechanical monsters is Energy.
· Offensive mechs' powerful skills consume large amounts of energy, but you can use Support mechs to charge them for higher damage output quickly.

Biological-Specific Mechanics: Buffs
File:Tutorial Biological-Specific Mechanics: Buffs 1.png
· The core mechanic of Biological monsters is Buffs.
· Offensive companion skills are enhanced based on the current number of buff stacks. You can use Support companions to apply buffs and unleash burst damage.
· Stat-enhancing buffs last 2 turns. Triggering the same-name buff again refreshes the effective turn number. You can check buff status by pressing C to access the Status tab.

Scene Prop: Charging Pod
File:Tutorial Scene Prop Charging Pod 1.png
Scene Props will randomly appear in some stages. They can be destroyed with just one attack. When you attack an enemy, destroying the Scene Prop is not a bad idea.

Charging Pod: Break it to restore Energy.

Scene Prop: Swift Clock
File:Tutorial Scene Prop: Swift Clock 1.png
Scene Props will randomly appear in some stages. They can be destroyed with just one attack. When you attack an enemy, destroying the Scene Prop is not a bad idea. Swift Clock: Break it to act again immediately.

Scene Prop: Healing Pod
File:Tutorial Scene Prop: Healing Pod 1.png
Scene Props will randomly appear in some stages. They can be destroyed with just one attack. When you attack an enemy, destroying the Scene Prop is not a bad idea. Healing Pod: Break it to restore HP.

Auxiliary Plug-Ins

Item Shield Break Marker Plug-In Shield Break Marker Plug-In
Attacks against marked enemies can pierce shields
Item Soul Eater Plug-In Soul Eater Plug-In
Defeating enemies restores 60 Energy.
Item Speed King Plug-In Speed King Plug-In
Successfully performing quick-time interactions grants 20 bonus Energy.
Item Invincible Speed Plug-In Invincible Speed Plug-In
The fastest ally gains full starting Energy.
Item Let's Try It Again Plug-In Let's Try It Again Plug-In
After a Mark is removed, your fastest unit takes another action immediately. Limited to once per round.
Item Your Turn Belongs to My Plug-In Your Turn Belongs to My Plug-In
Upon an enemy's defeat, the one who dealt the final blow may act instantly. Limited to once per round
Item Weaken Plug-In Weaken Plug-In
When using a skill, if the target is an enemy, randomly dispel one stat buff from the main target
Item Purification Plug-In Purification Plug-In
Dispels the mark on allies when they receive a stat buff
Item Lifesteal Plug-In Lifesteal Plug-In
After defeating an enemy unit, the one that dealt the final blow gains a healing buff at the start of each turn for 2 turns
Item For All Plug-In For All Plug-In
When a support ally uses a skill that grants a buff, it grants an extra turn. Limited to once per round.

Light Nap

Dream Into the Outer Ring

When Dreams Remain Unfinished Story  Story-1 — Dream Into the Outer Ring
Commission Dream Into the Outer Ring
Dream Details Everyone enters Yidhari's dream and finds themselves in the Outer Ring. While puzzled, Lucia notices Big Daddy surrounded by Ethereals. Better help him out first.

Light Nap Battle (I)

When Dreams Remain Unfinished Combat  Combat-1 — Light Nap Battle (I) Easy
Dream Description Try ordering an Ethereal ally to eliminate enemies. Make good use of the Energy system and quick-time interactions to fight more efficiently.
(For this stage, the skill activation mode is set to Classic Mode.)
Key Enemy Info Wave 1
Tyrfing - Energized

Wave 2
Tyrfing - Energized
Tyrfing - Energized
Recommended Squad
Tyrfing
Completion Rewards

Master Ethereal Trainer

When Dreams Remain Unfinished Story  Story-2 — Master Ethereal Trainer
Commission Become a Master Ethereal Trainer
Dream Details After the battle, everyone heads to Blazewood to rest and ask Big Daddy about the situation there.

Light Nap Battle (II)

When Dreams Remain Unfinished Combat  Combat-2 — Light Nap Battle (II) Easy
Dream Description Master the Ethereal mark system to deal higher DMG and wipe out enemies!
Key Enemy Info
Tyrfing - Energized
Recommended Squad
Tyrfing
Completion Rewards

Old and New Friends

When Dreams Remain Unfinished Story  Story-3 — Old and New Friends
Commission Old and New Friends
Dream Details Lucia seems to have made a "new friend". Go talk to her and find out more.

Light Nap Battle (III)

When Dreams Remain Unfinished Combat  Combat-3 — Light Nap Battle (III) Normal
Dream Description The enemy Heavy Striker Mark II is a single unit with high HP. Defeat it with Frenzied Maniac's single-target burst ability. As for the remaining enemies, try using Ionized - Nassellaria's AoE DMG skill to strike multiple targets at once.
Key Enemy Info
Recommended Squad
Tyrfing
Ionized - Nassellaria
Completion Rewards

Light Nap Battle (IV)

When Dreams Remain Unfinished Combat  Combat-4 — Light Nap Battle (IV) Normal
Dream Description The large number of Light Patroller enemies makes them troublesome. Consider using Dullahan along with Ionized - Nassellaria's AoE DMG skill to clear them out.
Key Enemy Info
Recommended Squad
Tyrfing
Ionized - Nassellaria
Dullahan
Completion Rewards
Invincible Speed Plug-In

Special Offensive Mech Records

When Dreams Remain Unfinished Story  Story-4 — Special Offensive Mech Records
Commission Do Combat Machines Dream of Electric People
Dream Details After the battle, a peculiar piece of mechanical wreckage was recovered from the battlefield. Everyone examined it closely, hoping to uncover some clues.

Light Nap Battle: Troublemaker

When Dreams Remain Unfinished Combat  Combat-5 — Light Nap Battle: Troublemaker Hard
Dream Description This is the first Troublemaker-Rank enemy in the dream, so proceed with caution. Try using Dullahan's skill to mark as many enemies as possible, then unleash Thracian's skill mechanic to deal burst DMG!
Key Enemy Info Initial Enemies

When all Light Patrollers are defeated
Beholder Engine
Beholder Engine
Beholder Engine
Recommended Squad
Tyrfing
Dullahan
Thracian
Recommended
Plug-Ins
Invincible Speed Plug-In
Invincible Speed Plug-In
Completion Rewards
Shield Break Marker Plug-In
Let's Try It Again Plug-In

Deep Sleep

Dream of Port Elpis

When Dreams Remain Unfinished Story  Story-1 — Dream of Port Elpis
Commission Dream of Port Elpis
Dream Details Upon entering the dream of Port Elpis, you see Yidhari inside the harbor. Just as you're about to reach her, a port boy blocks the entrance, forcing you to negotiate.

Deep Sleep Battle (I)

When Dreams Remain Unfinished Combat  Combat-1 — Deep Sleep Battle (I) Easy
Dream Description Command your Mechanical allies to eliminate enemies. Use type advantages to inflict extra DMG against biological foes. And don't forget Energy is vital for Mechanical allies, so make the most of the Beholder Engine to recharge them!
Key Enemy Info
Security Operative
Security Operative
Security Operative
Recommended Squad
Beholder Engine
Recommended
Plug-Ins
Invincible Speed Plug-In
Invincible Speed Plug-In
Completion Rewards
Your Turn Belongs to My Plug-In

Birthday Present

When Dreams Remain Unfinished Story  Story-2 — Birthday Present
Commission Birthday Present
Dream Details After handling the port boy, head into Port Elpis and find Yidhari, who's talking with an elderly man.

Deep Sleep Battle (II)

When Dreams Remain Unfinished Combat  Combat-2 — Deep Sleep Battle (II) Easy
Dream Description The enemy Flame Dreamer will keep granting buffs to his allies — make sure to take him out first!
Key Enemy Info
Flame Dreamer
Flame Dreamer
Security Operative
Security Operative
Recommended Squad
Beholder Engine
Recommended
Plug-Ins
Invincible Speed Plug-In
Invincible Speed Plug-In
Completion Rewards

Clues about the Darkwater Research Center

When Dreams Remain Unfinished Story  Story-3 — Clues about the Darkwater Research Center
Commission Clues about the Darkwater Research Center
Dream Details After being taught a lesson, the dock security guard has become much more cooperative. Ask him about the location of the Darkwater Research Center.

Deep Sleep Battle (III)

When Dreams Remain Unfinished Combat  Combat-3 — Deep Sleep Battle (III) Normal
Dream Description The enemy Dreaming Hymnist will empower the Bulky Enforcers. Use the Heavy Striker Mark II's area DMG skill to deal with them and reduce the threat posed by Bulky Enforcers.
Key Enemy Info
Dreaming Hymnist
Dreaming Hymnist
Dreaming Hymnist
Dreaming Hymnist
Dreaming Hymnist
Dreaming Hymnist
Dreaming Hymnist
Dreaming Hymnist
Recommended Squad
Beholder Engine
Recommended
Plug-Ins
Your Turn Belongs to My Plug-In
Your Turn Belongs to My Plug-In
Completion Rewards
Soul Eater Plug-In

Deep Sleep Battle (IV)

When Dreams Remain Unfinished Combat  Combat-4 — Deep Sleep Battle (IV) Normal
Dream Description The enemy Flame Dreamer will keep buffing the Bulky Enforcer. Try using Terror Raptor's single-target burst skill to take down the Flame Dreamer first.
Key Enemy Info
Flame Dreamer
Flame Dreamer
Recommended Squad
Beholder Engine
Terror Raptor
Recommended
Plug-Ins
Your Turn Belongs to My Plug-In
Your Turn Belongs to My Plug-In
Completion Rewards

Tales from the Docks

When Dreams Remain Unfinished Story  Story-4 — Special Offensive Mech Records
Commission Tales from the Docks
Dream Details The defeated Captain Morgan watches everyone warily, standing firm in defiance. It feels necessary to explain the situation to him.

Deep Sleep Battle: Troublemaker

When Dreams Remain Unfinished Combat  Combat-5 — Deep Sleep Battle: Troublemaker Hard
Dream Description This is the strongest enemy in this dream zone. Try making use of Auxiliary Plug-In effects and finish it off with Terror Raptor's single-target burst skill!
Key Enemy Info Initial Enemies
Security Operative
Security Operative
Security Operative

When all Security Operatives are defeated
Dreaming Hymnist
Dreaming Hymnist
Dreaming Hymnist
Dreaming Hymnist
Dreaming Hymnist
Dreaming Hymnist
Recommended Squad
Beholder Engine
Terror Raptor
Recommended
Plug-Ins
Your Turn Belongs to My Plug-In
Your Turn Belongs to My Plug-In
Completion Rewards
Speed King Plug-In
Weaken Plug-In

Phantoms of the Past

When Dreams Remain Unfinished Story  Story-5 — Phantoms of the Past
Commission Phantoms of the Past
Dream Details After helping Captain Morgan deal with the dock crisis, Yidhari is trying to get him to share the shipping information. Help her out.

Dream Abyss

The Final Dream

When Dreams Remain Unfinished Story  Story-1 — The Final Dream
Commission The Final Dream
Dream Details Re-entering the dream, everyone arrives at the shattered Darkwater Research Center, where Yidhari stands alone. Go over and comfort her.

Dream Abyss Battle (I)

When Dreams Remain Unfinished Combat  Combat-1 — Dream Abyss Battle (I) Easy
Dream Description Buff effects are crucial for Biological allies. Once a Bulky Enforcer receives a buff, its skills are enhanced. Use the Dreaming Hymnist to grant buffs to the Bulky Enforcer!
Key Enemy Info
Ionized - Nassellaria
Tyrfing - Energized
Tyrfing - Energized
Recommended Squad
Dreaming Hymnist
Dreaming Hymnist
Recommended
Plug-Ins
Invincible Speed Plug-In
Invincible Speed Plug-In
Soul Eater Plug-In
Soul Eater Plug-In
Completion Rewards
Purification Plug-In

Dream Abyss Battle (II)

When Dreams Remain Unfinished Combat  Combat-2 — Dream Abyss Battle (II) Normal
Dream Description Dullahan places marks on your allies, so try taking it out first with the Bulky Enforcer. At the same time, using Dreaming Hymnist to keep buffing the Bulky Enforcer will give you a huge advantage.
Key Enemy Info
Dullahan - Energized
Ionized - Nassellaria
Ionized - Nassellaria
Recommended Squad
Dreaming Hymnist
Dreaming Hymnist
Security Operative
Recommended
Plug-Ins
Your Turn Belongs to My Plug-In
Your Turn Belongs to My Plug-In
Purification Plug-In
Purification Plug-In
Completion Rewards

Farewell

When Dreams Remain Unfinished Story  Story-2 — Farewell
Commission Farewell
Dream Details After defeating the enemies, everyone follows the escape route Yidhari took back then. Continue forward with the group to uncover the truth of that day.

Dream Abyss Battle (III)

When Dreams Remain Unfinished Combat  Combat-3 — Dream Abyss Battle (III) Normal
Dream Description The enemy Frenzied Maniac deals heavy DMG, posing a serious threat. Prioritize eliminating it with your DMG-dealing allies.
Key Enemy Info
Dullahan - Energized
Tyrfing - Energized
Recommended Squad
Dreaming Hymnist
Dreaming Hymnist
Security Operative
Flame Dreamer
Flame Dreamer
Recommended
Plug-Ins
Invincible Speed Plug-In
Invincible Speed Plug-In
Purification Plug-In
Purification Plug-In
Completion Rewards
Lifesteal Plug-In

Dream Abyss Battle (IV)

When Dreams Remain Unfinished Combat  Combat-4 — Dream Abyss Battle (IV) Normal
Dream Description The enemy Thracian has AoE burst skills, so you'll need to dispel marks from your squad quickly. Alternatively, use Rampant Brute's AoE DMG skill to take out the enemy Tyrfing first, preventing it from adding marks for the Thracian.
Key Enemy Info
Thracian
Tyrfing - Energized
Tyrfing - Energized
Tyrfing - Energized
Tyrfing - Energized
Recommended Squad
Dreaming Hymnist
Dreaming Hymnist
Flame Dreamer
Flame Dreamer
Recommended
Plug-Ins
Purification Plug-In
Purification Plug-In
Lifesteal Plug-In
Lifesteal Plug-In
Completion Rewards

Unfinished Dreams

When Dreams Remain Unfinished Story  Story-3 — Unfinished Dreams
Commission Unfinished Dreams
Dream Details You're finally nearing the area where a dream exit can appear, but the Dead End Butcher is closing in. Hurry and get Yidhari out of the dream!

Dream Abyss Battle: Troublemaker

When Dreams Remain Unfinished Combat  Combat-5 — Dream Abyss Battle: Troublemaker Hard
Dream Description At the heart of Yidhari's nightmare lies the strongest foe in this dream. Keep your allies buffed, draw on the experience you've gained, and shatter this nightmare once and for all!
Key Enemy Info Initial Enemies
Notorious - Dead End Butcher
Ionized - Nassellaria
Ionized - Nassellaria
Ionized - Nassellaria

When all Nassellaria are defeated
Tyrfing - Energized
Tyrfing - Energized
Tyrfing - Energized
Recommended Squad
Dreaming Hymnist
Dreaming Hymnist
Flame Dreamer
Flame Dreamer
Recommended
Plug-Ins
Purification Plug-In
Purification Plug-In
Lifesteal Plug-In
Lifesteal Plug-In
Completion Rewards
For All Plug-In

Simulation Challenge

Simulation Challenge (I)

When Dreams Remain Unfinished Combat  Combat-1 — Simulation Challenge (I) Hard
Dream Description Special Mechanic: When allies attack an enemy with a mark, they gain an extra 20 Energy.
Perfect Condition Deploy only 1 ally
Key Enemy Info
Terror Raptor
Beholder Engine
Beholder Engine
Beholder Engine
Recommended Squad
Thracian
Recommended
Plug-Ins
Let's Try It Again Plug-In
Let's Try It Again Plug-In
Completion Rewards
(With Perfect Clear)

Simulation Challenge (II)

When Dreams Remain Unfinished Combat  Combat-2 — Simulation Challenge (II) Nightmare
Dream Description Special Mechanic: Troublemaker-Rank enemies have increased HP and ATK, and enter battle with a large shield.
Once all other enemies are defeated, the Troublemaker's shield vanishes and all allies can act again immediately.
Perfect Condition Complete the challenge within 4 rounds
Key Enemy Info
Beholder Engine
Beholder Engine
Beholder Engine
Recommended Squad
Ionized - Nassellaria
Dullahan
Thracian
Recommended
Plug-Ins
Let's Try It Again Plug-In
Let's Try It Again Plug-In
Completion Rewards
(With Perfect Clear)

Simulation Challenge (III)

When Dreams Remain Unfinished Combat  Combat-3 — Simulation Challenge (III) Hard
Dream Description Special Mechanic: When allies succeed in an quick-time interaction, they gain an extra 20 Energy.
Perfect Condition Complete the challenge within 3 rounds
Key Enemy Info
Dreaming Hymnist
Dreaming Hymnist
Dreaming Hymnist
Dreaming Hymnist
Dreaming Hymnist
Dreaming Hymnist
Recommended Squad
Beholder Engine
Terror Raptor
Recommended
Plug-Ins
Your Turn Belongs to My Plug-In
Your Turn Belongs to My Plug-In
Soul Eater Plug-In
Soul Eater Plug-In
Completion Rewards
(With Perfect Clear)

Simulation Challenge (IV)

When Dreams Remain Unfinished Combat  Combat-4 — Simulation Challenge (IV) Nightmare
Dream Description Special Mechanic: Troublemaker-Rank enemies have increased HP and ATK. Only 3 allies can be deployed in this battle. However, at the start of each turn, allies restore 40 extra Energy and gain 3 stacks of a buff (increasing DMG dealt and reducing DMG taken).
Perfect Condition Complete the challenge without support allies
Key Enemy Info
Recommended Squad
Terror Raptor
Thracian
Recommended
Plug-Ins
Speed King Plug-In
Speed King Plug-In
Weaken Plug-In
Weaken Plug-In
Completion Rewards
(With Perfect Clear)

Simulation Challenge (V)

When Dreams Remain Unfinished Combat  Combat-5 — Simulation Challenge (V) Hard
Dream Description Special Mechanic: At the start of each turn, allies receive a Mark. If already marked, they instead receive 3 stacks of a CRIT buff (increasing CRIT Rate and CRIT DMG).
Perfect Condition Complete the challenge within 3 rounds
Key Enemy Info
Recommended Squad
Flame Dreamer
Recommended
Plug-Ins
Your Turn Belongs to My Plug-In
Your Turn Belongs to My Plug-In
Speed King Plug-In
Speed King Plug-In
For All Plug-In
For All Plug-In
Completion Rewards
(With Perfect Clear)

Simulation Challenge (VI)

When Dreams Remain Unfinished Combat  Combat-6 — Simulation Challenge (VI) Nightmare
Dream Description Special Mechanic: Troublemaker-Rank enemies have increased HP and ATK. Each time enemies land a hit, they apply a Mark to allies, dealing increased DMG to all allies with a Mark. When a Mark is removed, allies recover HP.
Perfect Condition Complete the challenge within 5 rounds
Key Enemy Info
Notorious - Dead End Butcher
Dullahan - Energized
Dullahan - Energized
Recommended Squad
Dreaming Hymnist
Dreaming Hymnist
Flame Dreamer
Flame Dreamer
Recommended
Plug-Ins
Speed King Plug-In
Speed King Plug-In
Purification Plug-In
Purification Plug-In
For All Plug-In
For All Plug-In
Completion Rewards
(With Perfect Clear)

Other Languages

Dream Investigation

LanguageOfficial Name
EnglishDream Investigation
Chinese
(Simplified)
入梦调查
Chinese
(Traditional)
入夢調查
Japanese夢境調査
Korean꿈세계 조사
Kkumsegye Josa
SpanishInvestigación onírica
FrenchEnquête onirique
RussianИсследование сна
Issledovaniye sna
Thaiสำรวจความฝัน
VietnameseNhập Mộng Điều Tra
GermanTraumermittlung
IndonesianInvestigasi Mimpi
PortugueseAdentrar Sonho

Simulation Challenge

LanguageOfficial Name
EnglishSimulation Challenge
Chinese
(Simplified)
模拟挑战
Chinese
(Traditional)
模擬挑戰
Japanese模擬挑戦
Korean모의 도전
Moui Dojeon
SpanishDesafío de simulación
FrenchDéfi en simulation
RussianИспытание симуляции
Ispytaniye simulyatsii
Thaiแบบจำลองการท้าทาย
VietnameseKhiêu Chiến Mô Phỏng
GermanSimulierte Herausforderung
IndonesianTantangan Simulasi
PortugueseDesafio de Simulação

Change History