If you're finally reaching the mid-game of Jujutsu Infinite, one of the first significant milestones that you will be able to find is the Cursed School Investigation Raid. This is where Cursed School Keys are utilized.

What Are Cursed School Keys?

School Keys are a unique crafting material that is primarily utilized to create high-damage weapons, armor, and accessories that will help you progress to more brutal raids and materials. They're invaluable for the range of 60-150-level players.

To farm keys, you must:

• Reach Level 60.

• Unlock the Cursed School Investigation, which is the game's first official raid.

• Join the raid by speaking to the NPC next to the raid portal in Zen Forest or by following quest markers.
  

Keys drop from mini bosses in the raid, usually 1–2 per run. The chests on the raid map also have a higher probability of dropping the key if you clean all waves. Multiple runs and consistent farming are required since key numbers build at a slow rate. Each run of the raid does take time, so having a good party and optimizing your cursed technique early will increase efficiency.

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