Jujutsu Valheim — Shinjuku Showdown

Awaken your cursed energy. Master the Limitless. Challenge the King of Curses.

Bring the world of Jujutsu Kaisen into Valheim. Meet Gojo Satoru and Itadori Yuji, unlock cursed techniques, collect Sukuna's 20 fingers, and experience a cinematic showdown in a city arena high above the world.

Built around Valheim's low-poly style, native lighting and HUD, Jujutsu Valheim combines exploration, equipment progression, powerful techniques and challenging boss encounters.

Version: 1.1.1
Target game version listed in the guide: Valheim 1.0.20
Spoiler warning: This mod includes major events from the Jujutsu Kaisen manga's Shinjuku Showdown.

Main Features

• Cursed Energy: Awaken a new resource that powers your techniques and strengthens melee attacks.
• Black Flash: Trigger devastating black-and-red strikes and chain them together.
• Gojo's Limitless: Use Blue, Red, Hollow Purple and Unlimited Void.
• Gojo Boss Battle: Defeat the strongest sorcerer to earn his complete equipment set.
• Sukuna Finger Hunt: Discover 20 fingers across Valheim's biomes.
• Shinjuku Showdown: Witness Gojo and Sukuna clash before facing Sukuna yourself.
• Mahoraga: Fight an adapting enemy that encourages varied damage types.
• Sukuna's Equipment: Earn his gear and unlock playable Dismantle and Cleave techniques.
• Adjustable Difficulty: Choose Easy, Normal or Hard for Sukuna.
• Battle Ratings: Earn performance-based rewards.

Latest Changes

Sukuna Appears Only When Challenged

Sukuna no longer spawns independently in the open world.

To summon him, speak to Itadori Yuji and select Challenge Sukuna.

Idle, non-combat Sukuna instances standing on the ground in older saves are automatically removed. Sukuna inside the city arena is not affected.

Two Malevolent Shrine Activations

After Gojo falls and the player begins fighting Sukuna directly, Sukuna activates Domain Expansion: Malevolent Shrine at:

• 60% remaining health
• 30% remaining health

Each threshold triggers one activation, for a total of two domain activations during this phase.

Post-Victory Return Dialogue

After defeating Sukuna, press E to speak to Itadori.

He reminds you to collect your rewards and equipment before leaving, and tells you that he will wait for five minutes.

Choose between:

• Return to Spawn: Teleport back to the world spawn point.
• Stay a Little Longer — Collect Loot First: Close the dialogue and remain in the arena.

Coming in Version 1.1.0 — Three-Language Support

Translation work is in progress. This feature is planned for version 1.1.0.

The mod will select its display language based on your Valheim language setting:

The planned English localization will use these technique names:

Installation

Dependencies

The package declares the following dependencies:

• denikson-BepInExPack_Valheim-5.4.2351
• ValheimModding-Jotunn-2.30.2

Thunderstore Mod Manager / r2modman

1. Open your Valheim profile.
2. Install JujutsuValheim by Arvin and its dependencies.
3. Launch the game using your modded profile.

For a downloaded ZIP, use Settings → Import local mod and select the package.

Manual Installation

Install BepInEx and Jotunn, then copy the contents of the package's plugins folder into:

BepInEx/plugins/JujutsuValheim/

Keep the sounds, models and vfx folders alongside JujutsuValheim.dll.

Back up your world before experimenting with Hollow Purple. Outside boss fights, it can permanently alter terrain. Set DestroyTerrain = false under [Purple] in the configuration to disable this.

Getting Started

1. Find Gojo Satoru and Itadori Yuji near the starting stone circle.
2. Talk to Gojo with E and choose Cursed Energy Awakening.
3. Read his five-page Beginner's Guide.
4. Prepare your equipment and challenge Gojo.
5. Defeat him to obtain his gear and unlock the Sukuna challenge.
6. Explore the world for Sukuna's fingers.
7. Return to Itadori to manage your fingers, choose a difficulty and challenge Sukuna.

Gojo is intended as a mid-to-late-game challenge. Defeating vanilla Valheim bosses first weakens him through the Toji's Scars mechanic.

Cursed Energy and Black Flash

After awakening, a Cursed Energy bar appears at the bottom-left of your screen.

When you run out of CE, your melee attacks return to normal.

Black Flash

Every Cursed Strike has a chance to trigger Black Flash.

• Base activation chance: 3%
• Each equipped Gojo armor piece: +1%
• Each chain stack: +7%, up to four stacks
• Chain window: 8 seconds
• Damage multiplier: 2.5×, stacking with the Cursed Strike bonus

Black Flash features black-and-red lightning, a brief hit-stop, a red flash, an on-screen banner and combat music.

Gojo Satoru

Meet Gojo near the starting stone circle to awaken your cursed energy, read the beginner's guide or begin his boss challenge.

Challenge Cost

Each attempt consumes:

Boss Battle

Gojo uses teleporting melee combos, Blue, Red, Black Flash, Hollow Purple and Unlimited Void.

His Infinity protects him from damage, and Reverse Cursed Technique allows him to heal. Below 30% health, he becomes more aggressive.

Every defeated vanilla boss, up to seven, reduces his health and damage. Progression milestones also weaken Infinity and eventually disable his healing and Domain Expansion.

Defeating Gojo awards his complete equipment set on every victory and unlocks the Sukuna challenge.

Gojo's Equipment

Gojo's equipment cannot be crafted from scratch. Obtain it by defeating him, then upgrade owned pieces at a workbench to quality 4.

Each armor piece also grants +25 maximum health and +20 maximum stamina.

Gojo's Techniques and Controls

Requirements: Awaken your cursed energy, wear the Six Eyes Blindfold, and hold the Limitless Technique.

Blue

Charge for at least 1.5 seconds before releasing. Full charge takes 8 seconds.

Longer charging increases its attraction strength and range.

Red

Tap to fire immediately, or hold for up to 3 seconds for a full charge.

Red explodes on impact and knocks enemies away.

Hollow Purple

Launch Blue, then hit it with Red to create Purple.

Purple briefly hovers before firing forward, piercing targets and ending in a huge explosion.

Its terrain destruction is disabled during boss fights.

Unlimited Void

• Cost: 100 CE
• Radius: 20 m
• Duration: 10 seconds
• Cooldown: 120 seconds

Enemies inside the domain are overwhelmed and immobilized.

After the domain ends, Domain Afterglow refills your CE and boosts Blue, Red, Cursed Strikes and Black Flash chance for 30 seconds.

Hunt Sukuna's 20 Fingers

Discover 20 fingers distributed across roughly eight locations, from the Meadows to the Deep North.

Find them using:

• Sukuna's Finger map markers
• Red pillars of light
• Red screen-edge glow that intensifies as you approach

Collecting fingers triggers a Cursed Spirit Ambush, with enemies based on the biome and your collection progress.

Carry Bonuses

Each finger carried grants:

• +2% damage
• +1% movement speed
• +5% maximum CE

Itadori can store your fingers or let you feed them to Sukuna. Stored and fed fingers still count toward Sukuna's strength, but do not provide the carrying bonuses.

The Shinjuku Showdown

After defeating Gojo, speak to Itadori and select Challenge Sukuna to enter the floating city arena.

The city becomes the battlefield for a cinematic confrontation between the strongest sorcerer of today and the strongest sorcerer in history.

Gojo vs. Sukuna

Gojo joins as your ally and opens with Hollow Purple.

Their duel features domain clashes, destructive techniques, attacks across the city and Mahoraga's adaptation wheel.

During this opening duel, you cannot damage Sukuna directly. Support Gojo by fighting summoned enemies and shikigami.

World Cutting Slash

As adaptation progresses, Sukuna prepares World Cutting Slash.

This attack cannot be blocked and ignores Infinity. Watch its warning and time your dodge carefully.

The Strongest… Now in Two Pieces. 😅

After Gojo falls, the battle becomes you against Sukuna.

Fighting Sukuna

Sukuna's strength scales with your collected fingers, including fingers carried, stored with Itadori or fed to Sukuna.

Challenge him with fewer fingers for an easier encounter, or collect all 20 to face full-strength Sukuna and earn his exclusive equipment.

Sukuna becomes more aggressive as his health falls. Vary your damage types to counter adaptation.

Domain Expansion: Malevolent Shrine

During the player-versus-Sukuna phase after Gojo falls, Sukuna activates Malevolent Shrine at 60% and 30% remaining health.

Prepare for two domain activations during this phase.

Difficulty

Choose the difficulty through Itadori before the next fight.

Death and Victory

If you die in the sky arena, your tombstone appears at the world spawn point.

Victory awards an S, A or B rating. Rewards scale with Sukuna's strength and your performance, including coins, meads, Flametal at 50% strength or higher, and Sukuna's equipment at full strength.

After victory, collect your rewards and equipment before leaving.

Press E on Itadori to open his return dialogue. Choose Return to Spawn or Stay a Little Longer — Collect Loot First. He will wait for five minutes.

Mahoraga

Mahoraga emerges from the shadows during the Sukuna encounter.

He is a separate enemy with his own health bar, movement and attack animations.

His wheel represents adaptation. Change your damage types instead of relying on a single kind of attack.

Sukuna's Equipment and Playable Techniques

Defeat 20-finger Sukuna to obtain:

• Sukuna's White Kimono
• Sukuna's Wide Trousers
• Demon-Exorcising Blade

Wearing both armor pieces while holding the blade grants:

• 2× CE regeneration
• +50% maximum CE
• Black-and-white slash effects on sword hits

Controls

Requirements: Hold the Demon-Exorcising Blade and carry at least one Sukuna finger.

Your held weapon determines whether you use Gojo's or Sukuna's technique set.

Configuration

The configuration file is generated after the first launch in:

BepInEx/config/

You can also use your mod manager's Config editor.

Adjust cursed energy, regeneration, Black Flash chances, damage, technique costs, cooldowns, domain settings, equipment bonuses, music and sound volume.

To disable permanent terrain destruction:

[Purple]
DestroyTerrain = false

Boss fights do not dig terrain regardless of this setting.

Multiplayer and Dedicated Servers

• Every player and the server must install the same mod version.
• Techniques, domain effects and boss fights include network synchronization.
• Multiplayer has received less testing than single-player.
• The sky city arena is not currently supported on dedicated servers.

Troubleshooting

Blue or Red will not activate

Make sure:

1. Gojo has awakened your cursed energy.
2. You are wearing the Six Eyes Blindfold.
3. You are holding the Limitless Technique.
4. You have enough CE.

Blue requires at least 1.5 seconds of charging.

Gojo is too strong

Defeat vanilla bosses first to weaken him through Toji's Scars. Return with stronger armor, food and meads.

I cannot find Sukuna in the open world

Sukuna no longer spawns independently. Speak to Itadori and choose Challenge Sukuna.

I cannot find the fingers

Check the map markers, then follow the red pillars and proximity glow.

I died in the sky arena. Where are my items?

Your tombstone appears at the world spawn point.

How do I leave after defeating Sukuna?

Collect your loot, then press E on Itadori and select Return to Spawn.

How do I check whether the mod loaded?

Search BepInEx/LogOutput.log for [JJK] or the Jujutsu Valheim startup message.

Console Commands

Open the console with F5. Most testing commands require devcommands first.