ifr25ku-31.31.2+fabric.jar is a release file of the Minecraft mod IFR25KU: The Institute of Fairy Research 2025 Kakera Unofficial for Fabric, made for Minecraft 1.21.1. It was published on March 11, 2026 and is 5 MB in size. For the full description, screenshots and every other version, visit the IFR25KU: The Institute of Fairy Research 2025 Kakera Unofficial mod page.
How to install: Put the .jar into the mods folder (.minecraft/mods) and start Minecraft with the matching mod loader profile.
