Players can obtain Cursed School Keys in Jujutsu Infinite through investigation raids

In Jujutsu Infinite, players can obtain Cursed School Keys by participating in the Cursed School investigation, which unlocks at level 60. These keys drop from chests during raids and are essential for crafting powerful items. The keys are used to craft various weapons and armor, including the Dragon Bone and Electric Staff, each requiring 200 keys. Players will need to collect hundreds of keys to create high-tier equipment. As players progress, they can unlock additional investigations, such as Yasohachi Bridge and Tokyo Subway, which offer their own keys. The Detention Center, available at level 300, provides access to some of the game's best items.