Imaginarium Theater/Seasons/2026-03-01

Season 21 of Imaginarium Theater was during Version "Luna V" and lasted from March 01, 2026 to April 01, 2026.

Season Details

Opening Characters

Varesa

Dori

Eula

Mika

Xianyun

Sayu

Fantastical Blessing

After the above characters join your party, Max HP, ATK, and DEF are increased by 20%.

Alternate Cast Elements

Electro
Cryo
Anemo

Special Guest Stars

Furina

Columbina

Durin

Bennett

Primary Antagonists

Lv. 90 Jadeplume Terrorshroom

Lv. 92 Veteran Koholasaurus Warrior: Waveshuttler

Lv. 95 Hexadecatonic Battle-Hardened Mandragora

Lv. 100 Perpetual Mechanical Array

Battles

Act 1

Battle: Normal

Stage Effects:
- Treacherous Thunder: A period of time after the challenge begins, thunder will descend and strike your characters.

Opposing Lineup 1
Enemy Level	Easy Mode: 75 Normal Mode: 80 Hard/Visionary Mode: 85
Performance Goals	Defeat all opponents "Star Challenge" Defeat all opponents within 65s
Advantages	Plunging Attacks have an advantage
Enemies	1 Furnace Shell Mountain Weasel
Opposing Lineup 2
Enemy Level	Easy Mode: 75 Normal Mode: 80 Hard/Visionary Mode: 85
Performance Goals	Defeat all opponents "Star Challenge" Defeat all opponents within 80s
Enemies	Wave 1: 2 Oprichniki Line Trooper 1 Oprichniki Hailstorm Cannoneer Wave 2: 1 Oprichniki Support Trooper 2 Oprichniki Hailstorm Cannoneer

Battle: Elite Assault

Stage Effects:
- Desolation: A Dendro Cluster will chase characters around once the challenge begins. When the Cluster touches a character or opponents, it will deal immense Dendro DMG to them. If it touches a character, it will disappear. The size and DMG dealt by these clusters will gradually bleed away and grow smaller, but its speed will also gradually increase.
- Treacherous Thunder: A period of time after the challenge begins, thunder will descend and strike your characters.

Opposing Lineup 1
Enemy Level	Easy Mode: 75 Normal Mode: 80 Hard/Visionary Mode: 85
Performance Goals	Defeat all opponents "Star Challenge" Defeat all opponents within 75s
Enemies	Wave 1: 1 Tepetlisaurus 1 Tepetlisaurus Warrior: Shard Striker 1 Tepetlisaurus Warrior: Rockbreaker Blade Wave 2: 1 Iktomisaurus 1 Iktomisaurus Warrior: Icy Tidebearer 1 Iktomisaurus Warrior: Cryocrystal Cannon

Act 2

Battle: Normal

Stage Effects:
- Treacherous Thunder: A period of time after the challenge begins, thunder will descend and strike your characters.

Opposing Lineup 1
Enemy Level	Easy Mode: 75 Normal Mode: 80 Hard/Visionary Mode: 85
Performance Goals	Defeat all opponents "Star Challenge" Defeat all opponents within 80s
Advantages	Characters who heal have an advantage
Enemies	Wave 1: 1 Fatui Skirmisher - Hydrogunner Legionnaire 1 Fatui Skirmisher - Electrohammer Vanguard 1 Fatui Skirmisher - Anemoboxer Vanguard Wave 2: 1 Wind Operative
Opposing Lineup 2
Enemy Level	Easy Mode: 75 Normal Mode: 80 Hard/Visionary Mode: 85
Performance Goals	Defeat all opponents "Star Challenge" Defeat all opponents within 75s
Advantages	Being in the Nightsoul's Blessing state gives an advantage
Enemies	Wave 1: 1 Hydro Hilichurl Rogue Wave 2: 1 Secret Source Automaton: Hunter-Seeker

Battle: Elite Assault

Stage Effects:
- Treacherous Thunder: A period of time after the challenge begins, thunder will descend and strike your characters.
- Tough Fight Scene: Elite opponents will have Attendants that will defend them. Each Attendant will increase the elite opponent's ATK by 10% and Element RES and Physical RES by 10%. The Attendants will restore the elite opponent's HP every 10s, with each Attendant restoring 5% HP. When there are no Attendants, the elite opponent will lose the aforementioned enhancement and restoration effects.

Opposing Lineup 1
Enemy Level	Easy Mode: 75 Normal Mode: 80 Hard/Visionary Mode: 85
Performance Goals	Defeat all opponents "Star Challenge" Defeat all opponents within 75s
Advantages	Being in the Nightsoul's Blessing state gives an advantage High-frequency elemental attacks have an advantage
Enemies	Wave 1: 1 Tenebrous Mimesis - Crackling Axe Mitachurl(receives buffs from Attendants) 2 Blazing Axe Mitachurl Wave 2: 1 Tenebrous Mimesis: Tepetlisaurus(receives buffs from Attendants) 2 Tepetlisaurus

Act 3

An evolved Fungus. When it is hit by Electro attacks and Catalyze reactions, it will accumulate Activation. When it is hit by Pyro attacks, it will lose Activation progress. When it accumulates sufficient Activation, it will enter an Activated state. An activated Jadeplume Terrorshroom will unleash more fearsome attacks until it becomes exhausted. When it is not Activated, the Jadeplume Terrorshroom can be put into a Burning state via the use of Pyro, which will cause it to become Scorched. It will then spread spores around to create Fungi in an attempt to escape this status.

Jadeplume Terrorshroom

Battle: Climactic Showdown

Opposing Lineup 1
Enemy Level	Easy Mode: 80 Normal Mode: 85 Hard/Visionary Mode: 90
Performance Goals	Defeat the Villain(s) within the time limit (105s) "Star Challenge" Defeat all opponents within 70ss
Advantages	Electro characters have an advantage
Enemies	1 Jadeplume Terrorshroom

Arcana Challenge I

Keep fighting until the countdown ends. End the stage with at least one character left standing to successfully complete the challenge. Each opponent you defeat will take time off the countdown.
Once the challenge begins, Electro Bursts will periodically be set off, dealing Electro DMG to your active character.

Keep Fighting

Stage Effects:
- Electro Discharge: Once the challenge begins, Electro Bursts will periodically be set off, dealing Electro DMG to your active character(s)

Opposing Lineup 1
Enemy Level	100
Performance Goals	Arcana Challenge Keep fighting until the countdown ends (360s) "Star Challenge" Defeat 18 opponents
Advantages	Shields have an advantage
Enemies	- Eremite Stone Enchanter - Eremite Desert Clearwater - Eremite Scorching Loremaster - Eremite Daythunder

Act 4

Battle: Defense Sequence

Opposing Lineup 1
Enemy Level	Normal Mode: 85 Hard/Visionary Mode: 90
Performance Goals	Prevent the Ley Line Monolith's destruction. Defeat opponents to deplete the timer (240s) "Star Challenge" Ley Line Monolith's remaining HP not less than 35%
Advantages	Enemies Are Easily Grouped
Enemies	- Treasure Hoarders: Crusher - Treasure Hoarders: Marksman - Treasure Hoarders: Gravedigger - Treasure Hoarders: Pugilist - Treasure Hoarders: Seaman - Treasure Hoarders: Handyman - Fatui Pyro Agent(periodically inflicts Smoldering Flames) - Fatui Pyro Agent(the enemy has the Tracking Fire Ball aura attached)
Opposing Lineup 2
Enemy Level	Normal Mode: 85 Hard/Visionary Mode: 90
Performance Goals	Prevent the Ley Line Monolith's destruction. Defeat opponents to deplete the timer (200s) "Star Challenge" Ley Line Monolith's remaining HP not less than 35%
Enemies	- Eremite Desert Clearwater - Eremite Sunfrost - Eremite Daythunder

Battle: High-Pressure Defense

Opposing Lineup 1
Enemy Level	Normal Mode: 85 Hard/Visionary Mode: 90
Performance Goals	Prevent the Ley Line Monolith's destruction. Defeat opponents to deplete the timer (230s) "Star Challenge" Ley Line Monolith's remaining HP not less than 35%
Advantages	Enemies Are Easily Grouped Powerful foes present
Enemies	- Cutting Edge All-Purpose Storm Landcruiser - Oprichniki Grenadier - Oprichniki Line Trooper - Oprichniki Vanguard - Oprichniki Medic - Oprichniki Bombardier

Act 5

Battle: Normal

Opposing Lineup 1
Enemy Level	Normal Mode: 85 Hard/Visionary Mode: 90
Performance Goals	Defeat as many opponents as possible (at least 4) within the time limit (120s) "Star Challenge" Defeat 5 opponents
Enemies	- Ruin Guard - Ruin Grader
Opposing Lineup 2
Enemy Level	Normal Mode: 85 Hard/Visionary Mode: 90
Performance Goals	Defeat as many opponents as possible (at least 20) within the time limit (120s) "Star Challenge" Defeat 26 opponents
Advantages	Enemies Are Easily Grouped Ousia-aligned attacks have an advantage
Enemies	- Recon Log Mek - Pneuma - Arithmetic Enhancer Mek - Pneuma - Geological Survey Mek - Pneuma - Nimble Harvester Mek - Pneuma

Battle: Elite Assault

Stage Effects:
- Desolation: A Dendro Cluster will chase characters around once the challenge begins. When the Cluster touches a character or opponents, it will deal immense Dendro DMG to them. If it touches a character, it will disappear. The size and DMG dealt by these clusters will gradually bleed away and grow smaller, but its speed will also gradually increase.

Opposing Lineup 1
Enemy Level	Normal Mode: 85 Hard/Visionary Mode: 90
Performance Goals	Defeat as many opponents as possible (at least 12) within the time limit (120s) "Star Challenge" Defeat 15 opponents
Advantages	Environmental hazards present
Enemies	- Kairagi: Fiery Might - Kairagi: Dancing Thunder - Nobushi: Hitsukeban - Nobushi: Kikouban

Act 6

If the enemy successfully freezes the character, they will unleash an additional Iceshatter Strike strike, and DMG dealt with the Shatter reaction is greatly increased.

Battle-Hardened Waveshuttler

Battle: Climactic Showdown

Opposing Lineup 1
Enemy Level	Normal Mode: 90 Hard/Visionary Mode: 92
Performance Goals	Defeat powerful opponent(s) within the time limit (100s) "Star Challenge" Defeat all opponents within 65s
Enemies	1 Veteran Koholasaurus Warrior: Waveshuttler

Arcana Challenge II

Defeat all opponents within the time limit.

Lightning Purge

Opposing Lineup 1
Enemy Level	100
Performance Goals	Defeat powerful opponent(s) within the time limit (120s) "Star Challenge" Defeat all opponents within 80s
Advantages	Being in the Nightsoul's Blessing state gives an advantage High-frequency elemental attacks have an advantage
Enemies	Wave 1: 1 Tenebrous Mimesis - Iktomisaurus Warrior: Icy Tidebearer 1 Tenebrous Mimesis - Tepetlisaurus Warrior: Rockbreaker Blade Wave 2: 1 Tenebrous Mimesis - Tepetlisaurus Warrior: Shard Striker 1 Tenebrous Mimesis - Qucusaurus Warrior: Heartstar Hammer

Act 7

Battle: Normal

Stage Effects:
- Survival Pressure: A period of time after the challenge begins, all party members will continuously lose small amounts of HP.

Opposing Lineup 1
Enemy Level	92
Performance Goals	Defeat all opponents "Star Challenge" Defeat all opponents within 85s
Advantages	Lunar reactions have an advantage Elemental Advantage Period Change Periodic Electro Requirement
Enemies	1 Gleaming Charge: Frostnight Scion
Opposing Lineup 2
Enemy Level	92
Performance Goals	Defeat all opponents "Star Challenge" Defeat all opponents within 95s
Advantages	Lunar reactions have an advantage Elemental Advantage Period Change Periodic Cryo Requirement
Enemies	1 Icy Crystal: Frostnight Scion

Battle: Elite Assault

Stage Effects:
- Survival Pressure: A period of time after the challenge begins, all party members will continuously lose small amounts of HP.
- Crackling Cage: A Plasma Field will be generated at the edge of the challenge area once the challenge begins. While within the field, characters will be hit by a lightning strike once every 2s and take Electro DMG. The area covered by the field will gradually expand as the challenge proceeds.

Opposing Lineup 1
Enemy Level	92
Performance Goals	Defeat all opponents "Star Challenge" Defeat all opponents within 75s
Advantages	Ranged has an advantage Environmental hazards present
Enemies	Wave 1: 8 Electro Hilichurl Shooter Wave 2: 2 Dendro Samachurl 2 Anemo Samachurl 4 Pyro Hilichurl Shooter Wave 3: 1 Thunderhelm Lawachurl(periodically inflicts Engulfing Storm)

Act 8

When battle begins, the Nemesis enters the Agglomerated State, during which all RES is dramatically increased. While in this state, the Nemesis's Agglomeration Energy is constantly consumed. Dealing Pyro or Electro DMG to the Nemesis drains this energy more quickly. When its Agglomeration Energy is fully depleted, the Nemesis unleashes "Sporebloom" and switches to Split State, where a large number of spores will split off. When these spores take damage, a certain percentage of the total damage is also dealt to the Nemesis. After remaining in the Split State for a period of time, the Nemesis will return to the Agglomerated State. In this case, if the number of spores on the field falls below a certain number, the Nemesis will go into the Brittle Agglomerated State, during which all RES is greatly reduced and its combat abilities are diminished. Additionally, if all spores generated in the Split State are defeated, the Nemesis will exit the Split State early and go into the Brittle Agglomerated State instead.

Hexadecatonic Battle-Hardened Mandragora

Battle: Climactic Showdown

Opposing Lineup 1
Enemy Level	95
Performance Goals	Defeat the Villain(s) within the time limit (110s) "Star Challenge" Defeat all opponents within 75s
Advantages	Enemies Are Easily Grouped Electro characters have an advantage Pyro characters have an advantage
Enemies	1 Hexadecatonic Battle-Hardened Mandragora

Act 9

Battle: Normal

Opposing Lineup 1
Enemy Level	95
Performance Goals	Defeat a specific number of Bounties (2) within the time limit (120s) "Star Challenge" Complete the main challenge objective within 80s
Advantages	Being in the Nightsoul's Blessing state gives an advantage High-frequency elemental attacks have an advantage
Enemies	- Tenebrous Mimesis - Crackling Axe Mitachurl - Hilichurl Fighter
Opposing Lineup 2
Enemy Level	95
Performance Goals	Defeat a specific number of Bounties (2) within the time limit (100s) "Star Challenge" Complete the main challenge objective within 65s
Enemies	- Cutting Edge Fire Support Ground Effect Landcruiser - Cutting Edge All-Purpose Storm Landcruiser - Large Pyro Slime

Battle: Elite Assault

Stage Effects:
- Thrilling Duel: When the active character is within the Duel Zone of an elite opponent, that character's DMG will be increased by 40%. When they are outside a Duel Zone, they will take DMG every 2s.

Opposing Lineup 1
Enemy Level	95
Performance Goals	Defeat a specific number of Bounties (3) within the time limit (120s) "Star Challenge" Complete the main challenge objective within 80s
Advantages	Bows have an advantage
Enemies	- Ruin Drake: Earthguard - Ruin Drake: Skywatch - Ruin Scout - Ruin Destroyer - Ruin Defender - Ruin Cruiser

Act 10

A mysterious ruin machine that can reconfigure itself into various forms. In battle, the Perpetual Mechanical Array will enter the Absolute Defense state, in which it splits and summons several different kinds of Ruin Sentinels. After defeating the enhanced Ruin Sentinels, Absolute Defense state will be removed and it will enter a weakened state.

Perpetual Mechanical Array

Battle: Climactic Showdown

Opposing Lineup 1
Enemy Level	100
Performance Goals	Defeat the Villain(s) within the time limit (120s) "Star Challenge" Defeat all opponents within 80s
Advantages	Focus fire on a single enemy
Enemies	1 Perpetual Mechanical Array