Acolyte Realm
From MHWiki
From the Travel Guide
Years ago in Bristle Woods, a MouseHunter by the name of Plankrun opened a passageway to another realm. The passage was intended to act as an elaborate one-way trap for Acolyte mice. However, recently, the Acolyte mice have had success in reversing the portal's direction and are attempting to re-enter the Gnawnia Kingdom.