If you’re diving into Jujutsu Infinite and looking to unlock stronger gear, new crafting recipes, or just progress beyond beginner zones, there’s one key item you need early on: the Cursed School Key.

This special key isn’t just a cool name. It’s your literal access pass to higher-tier loot, exclusive weapons, and armor that can help you survive tougher raids and bosses. In this guide, I’ll walk you through how to get the Cursed School Key in Jujutsu Infinite, what it’s used for, and how to farm it efficiently.

The Cursed School Key is a drop obtained from the Cursed School Investigation, the first major investigation or raid you can access in Jujutsu Infinite. Once you’ve gathered enough Cursed School Keys, you may want to invest in crafting tools that enhance techniques tied to the Energy Nature Scroll in Jujutsu Infinite, perfect for ranged and AoE-focused players.

These keys are not just collectibles, they’re used to craft powerful gear like:

• Dragon Bone (Weapon)
• Electric Staff
• Overtime Trousers
• Vest of Ruin
• Powerful Ring
• Magma Jacket

Each site has many keys (100–200), so learning how to farm them is essential.

To even begin farming Cursed School Keys, you first need to unlock the Cursed School Investigation. Many players also use farming tools like the Jujutsu Infinite Script to automate drops and enhance efficiency, especially useful when farming for hundreds of keys.

• Reach Level 60
• Open your menu and head to “Investigations”
• Select Cursed School from the investigation list.
• Prepare your character, this isn’t just a cakewalk, even for experienced players.

Once you meet the requirements and launch the mission, you’re in. This is a great point in the game to review your Jujutsu Infinite Tier List to ensure your innate is up to par before heading into tough raids.

Now, let’s cover the farming part, how do you get these keys?

• Load into the raid
• Your mission is to clear out cursed spirits, mini-bosses, and loot all available chests.
• Cursed School Keys drop randomly from these chests during or after the mission.

• The miniboss at the end has a higher chance of dropping keys.
• Clearing side mobs and cursed spirits gives access to more chest spawns
• Always check every room, some chests can spawn off the main path

• Each run may only net you a few keys, so expect to repeat this raid dozens of times.
• Remember: crafting high-tier items like the Dragon Bone weapon requires 200 keys.

If you’re serious about gear upgrades, this is the grind. But it pays off fast once you hit the next tier of content.

Here’s a quick snapshot of what you can do with them at the Zen Forest Crafting Station:

Item	Type	Keys Required
Dragon Bone	Weapon	200 Keys
Electric Staff	Weapon	200 Keys
Overtime Trousers	Armor	200 Keys
Vest of Ruin	Armor	100 Keys
Powerful Ring	Armor	100 Keys
Magma Jacket	Armor	100 Keys

These items provide serious stat boosts and are great for progressing through higher-level zones like Yasohachi Bridge, Tokyo Subway, and Eerie Farm Investigations.

If you’re farming for keys, here’s how to make it less painful and more efficient:

The mobs in this raid aren’t weak. Bring a team of reliable players to speed up each run and reduce deaths.

AoE (Area of Effect) abilities allow you to clear multiple cursed spirits fast. If you’re using scrolls, this is where builds from the Jujutsu Infinite Script can come in handy, especially for farming-focused loadouts. Don’t sleep on boss fights that drop other rare materials like the Demon Finger in Jujutsu Infinite, which pairs well with cursed school gear to enhance your cursed energy output.

Mobility helps you rush from one loot chest to the next quickly. Try using cursed tools or armor that boosts dash speed or stamina.

If you’ve unlocked Luck-based boosts, use them. Anything that boosts item drop chances will help with key farming.

Getting the Cursed School Key in Jujutsu Infinite is your first real milestone toward late-game power. It unlocks a new gear level, gives you access to harder investigations, and sets you up for grinding S-Tier innates, scrolls, and domain upgrades.

The process isn’t quick, but if you stick to it, follow the farming tips above, and bring the right team, you’ll be fully geared.